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With over 500 online simulations, virtual labs, and interactive cases for math and science—there’s a Gizmo for just about everybody. Let’s find yours.
Effect of Environment on New Life Form
5 Minute Preview
Using the scientific method, control the environmental conditions for a fictional alien organism in order to learn how the organism responds to changes in conditions. Sunlight, water, and...
Lesson Info Launch GizmoCoriolis Effect
- New!
5 Minute Preview
The Coriolis effect causes winds to be deflected as they move across Earth's surface, resulting in circular patterns of winds. This effect is caused by two factors, Earth's rotation and...
Lesson Info Launch GizmoHalf-life
5 Minute Preview
Investigate the decay of a radioactive substance. The half-life and the number of radioactive atoms can be adjusted, and theoretical or random decay can be observed. Data can be interpreted...
Lesson Info Launch GizmoGMOs and the Environment
- New!
5 Minute Preview
In this follow-up to the Genetic Engineering Gizmo, explore how farmers can maximize yield while limiting ecosystem damage using genetically modified corn. Choose the corn type to plant and...
Lesson Info Launch GizmoGreenhouse Effect
5 Minute Preview
Within this simulated region of land, daytime's rising temperature and the falling temperature at night can be measured, along with heat flow in and out of the system. The level of...
Lesson Info Launch GizmoPhotoelectric Effect
5 Minute Preview
Shoot a beam of light at a metal plate in a virtual lab and observe the effect on surface electrons. The type of metal as well as the wavelength and amount of light can be adjusted. An...
Lesson Info Launch GizmoGreenhouse Effect - Metric
5 Minute Preview
Within this simulated region of land, daytime's rising temperature and the falling temperature at night can be measured, along with heat flow in and out of the system. The amount of...
Lesson Info Launch GizmoQuadratics in Vertex Form
5 Minute Preview
Compare the graph of a quadratic to its equation in vertex form. Vary the terms of the equation and explore how the graph changes in response.
Lesson Info Launch GizmoPenumbra Effect
5 Minute Preview
Observe the partial shadows cast by a rectangular block lit by multiple light sources. The number of light sources ranges from one to five, and individual lights can be turned on or off....
Lesson Info Launch GizmoQuadratics in Polynomial Form
5 Minute Preview
Compare the graph of a quadratic to its equation in polynomial form. Vary the coefficients of the equation and explore how the graph changes in response.
Lesson Info Launch GizmoStandard Form of a Line
5 Minute Preview
Compare the standard form of a linear equation to its graph. Vary the coefficients and explore how the graph changes in response.
Lesson Info Launch GizmoPoint-Slope Form of a Line
5 Minute Preview
Compare the point-slope form of a linear equation to its graph. Vary the coefficients and explore how the graph changes in response.
Lesson Info Launch GizmoSlope-Intercept Form of a Line
5 Minute Preview
Compare the slope-intercept form of a linear equation to its graph. Vary the coefficients and explore how the graph changes in response.
Lesson Info Launch GizmoQuadratics in Factored Form
5 Minute Preview
Investigate the factors of a quadratic through its graph and through its equation. Vary the roots of the quadratic and examine how the graph and the equation change in response.
Lesson Info Launch GizmoSolving Linear Systems (Standard Form)
5 Minute Preview
Solve systems of linear equations, written in standard form. Explore what it means to solve systems algebraically (with substitution or elimination) and graphically. Also, use a draggable...
Lesson Info Launch GizmoGeneral Form of a Rational Function
5 Minute Preview
Compare the equation of a rational function to its graph. Multiply or divide the numerator and denominator by linear factors and explore how the graph changes in response.
Lesson Info Launch GizmoSolving Linear Systems (Slope-Intercept Form)
5 Minute Preview
Solve systems of linear equations, given in slope-intercept form, both graphically and algebraically. Use a draggable green point to examine what it means for an (x, y) point to be a...
Lesson Info Launch GizmoSystems of Linear Inequalities (Slope-intercept form)
5 Minute Preview
Compare a system of linear inequalities to its graph. Vary the coefficients and inequality symbols in the system and explore how the boundary lines, shaded regions, and the intersection of...
Lesson Info Launch GizmoRabbit Population by Season
5 Minute Preview
Observe the population of rabbits in an environment over many years. The land available to the rabbits and weather conditions can be adjusted to investigate the effects of urban sprawl and...
Lesson Info Launch GizmoDoppler Shift
5 Minute Preview
Observe sound waves emitted from a moving vehicle. Measure the frequency of sound waves in front of and behind the vehicle as it moves, illustrating the Doppler effect. The frequency of...
Lesson Info Launch GizmoFast Plants® 1 - Growth and Genetics
- Free!
- New!
FREE with no time limit!
5 Minute Preview
Grow Wisconsin Fast Plants® in a simulated lab environment. Explore the life cycles of these plants and how their growth is influenced by light, water, and crowding. Practice pollinating...
Lesson Info Launch GizmoZap It! Game
5 Minute Preview
Adjust the values in a quadratic function, in vertex form or in polynomial form, to "zap" as many data points as possible.
Lesson Info Launch GizmoMoonrise, Moonset, and Phases
5 Minute Preview
Gain an understanding of moonrise and moonset times by observing the relative positions of Earth and the Moon along with a view of the Moon from Earth. A line shows the horizon for a person...
Lesson Info Launch GizmoSmelling in the Rain: Designing Solutions to Improve Air Quality
- Free!
- Stem Case
FREE with no time limit!
Video PreviewA respiratory physiologist is concerned about the number of asthma attacks in children within her community. On certain days, the number is higher than the respiratory physiologist might...
Lesson InfoSeed Germination
5 Minute Preview
Perform experiments with several seed types to see what conditions yield the highest germination (sprouting) rate. Three different types of seeds can be studied, and the temperature, water...
Lesson Info Launch GizmoFood Chain
5 Minute Preview
In this ecosystem consisting of hawks, snakes, rabbits and grass, the population of each species can be studied as part of a food chain. Disease can be introduced for any species, and the...
Lesson Info Launch GizmoTemperature and Sex Determination
5 Minute Preview
Observe the sex ratios of birds and geckos as they hatch in an incubator. Vary the temperature of the incubator and measure the percentages of male and female hatchlings to determine if...
Lesson Info Launch GizmoTemperature and Sex Determination - Metric
5 Minute Preview
Observe the sex ratios of birds and geckos as they hatch in an incubator. Vary the temperature of the incubator and measure the percentages of male and female hatchlings to determine if...
Lesson Info Launch GizmoWater Pollution
5 Minute Preview
Get to know the four main types of pollution present in the environment, and then look at a variety of real-world examples as you try to guess what type of pollution is represented by each...
Lesson Info Launch GizmoDiffusion
- Stem Case
As a physician assistant, students must learn about diffusion to save the life of a person poisoned by chlorine gas that was released into a small town following a train crash.
Lesson InfoPhases of the Moon
- Free!
FREE with no time limit!
5 Minute Preview
Understand the phases of the Moon by observing the positions of the Moon, Earth and Sun. A view of the Moon from Earth is shown on the right as the Moon orbits Earth. Learn the names of...
Lesson Info Launch GizmoEcosystems
- Stem Case
As a national park ranger, students must restore the ecosystem of a park back to normal. They interact with populations of many organisms including wolves, deer and bees. Students learn the...
Lesson InfoNatural Selection
5 Minute Preview
You are a bird hunting moths (both dark and light) that live on trees. As you capture the moths most easily visible against the tree surface, the moth populations change, illustrating the...
Lesson Info Launch GizmoRoad Trip (Problem Solving)
5 Minute Preview
Plan a cross-country road trip through various U.S. state capitals. First choose a vehicle to drive, and then fill up the tank with gas and go! Find the range and gas mileage of each...
Lesson Info Launch GizmoHoneybee Hive
- Free!
- New!
FREE with no time limit!
5 Minute Preview
Explore life in the hive by meeting workers, drones, and the queen bee herself! Visit flower patches to determine the best sources of food, and then perform a waggle dance to let the other...
Lesson Info Launch GizmoRNA and Protein Synthesis
- Updated!
5 Minute Preview
Go through the process of synthesizing proteins through RNA transcription and translation. Learn about the many steps involved in protein synthesis including: unzipping of DNA, formation of...
Lesson Info Launch GizmoParamecium Homeostasis
5 Minute Preview
Observe how a paramecium maintains stable internal conditions in a changing aquatic environment. Water moves into the organism by osmosis, and is pumped out by the contractile vacuole. The...
Lesson Info Launch GizmoCollision Theory
- Free!
FREE with no time limit!
5 Minute Preview
Observe a chemical reaction with and without a catalyst. Determine the effects of concentration, temperature, surface area, and catalysts on reaction rates. Reactant and product...
Lesson Info Launch GizmoDisease Spread
- Free!
- Updated!
FREE with no time limit!
5 Minute Preview
Observe the spread of disease through a group of people. The methods of transmission can be chosen and include person-to-person, airborne, and foodborne as well as any combination thereof....
Lesson Info Launch GizmoCell Respiration
- Stem Case
As a medical toxicologist, students learn about cell respiration to save the life of a CIA agent that has been poisoned.
Lesson InfoDoppler Shift Advanced
5 Minute Preview
Derive an equation to calculate the frequency of an oncoming sound source and a receding sound source. Also, calculate the Doppler shift that results from a moving observer and a stationary...
Lesson Info Launch GizmoReverse the Field
5 Minute Preview
Measure the time required to write a word when the mouse behaves in a normal fashion and when the direction of motion is reversed from left to right, up to down, or both. Run several...
Lesson Info Launch GizmoWater Cycle
5 Minute Preview
Control the path of a drop of water as it travels through the water cycle. Many alternatives are presented at each stage. Determine how the water moves from one location to another, and...
Lesson Info Launch GizmoPrairie Ecosystem
5 Minute Preview
Observe the populations of grass, prairie dogs, ferrets and foxes in a prairie ecosystem. Investigate feeding relationships and determine the food chain. Bar graphs and line graphs show...
Lesson Info Launch GizmoPond Ecosystem
5 Minute Preview
Measure the temperature and oxygen content of a pond over the course of a day. Then go fishing to see what types of fish live in the pond. Many different ponds can be investigated to...
Lesson Info Launch GizmoBiconditional Statements
5 Minute Preview
Make a biconditional statement from a given definition using word tiles. Use both symbolic form and standard English form.
Lesson Info Launch GizmoConditional Statements
5 Minute Preview
Make a conditional statement from a given fact using word tiles. Use both symbolic form and standard English form.
Lesson Info Launch GizmoFruit Production
- Stem Case
As an agricultural scientist, students help a strawberry farmer who is having problems with low fruit production. Students learn about the factors involved in fruit production including...
Lesson InfoMicroevolution
5 Minute Preview
Observe the effect of predators on a population of parrots with three possible genotypes. The initial percentages and fitness levels of each genotype can be set. Determine how initial...
Lesson Info Launch GizmoHeredity and Traits
- Free!
- Stem Case
FREE with no time limit!
Video PreviewAs a bee scientist, students help a honey farm that has low honey production due to wasps. Students learn about bees, heredity and traits to determine which traits will help the bees defend...
Lesson InfoGrowing Plants
- Updated!
5 Minute Preview
Investigate the growth of three common garden plants: tomatoes, beans, and turnips. You can change the amount of light each plant gets, the amount of water added each day, and the type of...
Lesson Info Launch GizmoImproper Fractions and Mixed Numbers
5 Minute Preview
Represent a quantity given by a shaded region as an improper fraction and as a mixed number. Experiment with different shaded regions sliced differently.
Lesson Info Launch GizmoFeel the Heat
- New!
5 Minute Preview
Have you ever used a glove warmer to keep your hands warm? How about an instant cold pack to treat an injury? In the Feel the Heat Gizmo, create your own hot and cold packs using various...
Lesson Info Launch GizmoPendulum Clock
- Free!
FREE with no time limit!
5 Minute Preview
Find the effect of length, mass, and angle on the period of a pendulum. The pendulum is attached to a clock that can be adjusted to tell time accurately. The clock can be located on Earth...
Lesson Info Launch GizmoPeriodic Trends
- New!
5 Minute Preview
Explore trends in atomic radius, ionization energy, and electron affinity in the periodic table. Measure atomic radius with a ruler and model ionization energy and electron affinity by...
Lesson Info Launch GizmoDividing Mixed Numbers
5 Minute Preview
Choose the correct steps to divide mixed numbers. Use step-by-step feedback to diagnose and correct incorrect steps.
Lesson Info Launch GizmoEstimating Sums and Differences
5 Minute Preview
Estimate the sum or difference of two fractions using area models. Compare estimates to exact sums and differences.
Lesson Info Launch GizmoDilations
5 Minute Preview
Dilate a figure and investigate its resized image. See how scaling a figure affects the coordinates of its vertices, both in (x, y) form and in matrix form.
Lesson Info Launch GizmoPercents, Fractions, and Decimals
5 Minute Preview
Compare a quantity represented by an area with its percent, fraction, and decimal forms.
Lesson Info Launch GizmoPart-to-part and Part-to-whole Ratios
5 Minute Preview
Compare a ratio represented by an area with its percent, fraction, and decimal forms.
Lesson Info Launch GizmoNitrogen Cycle
- Stem Case
An infant on a farm has blue baby syndrome. As an EPA environmental engineer, students must find the cause of the baby's illness. Using environment data, students learn the importance of...
Lesson InfoCannonball Clowns (Number Line Estimation)
5 Minute Preview
Launch clowns from a circus cannon and try to hit the target. Drag digit cards on the control panel to set the launch distance and choose an appropriate unit of distance. After practicing...
Lesson Info Launch GizmoUsing Algebraic Equations
5 Minute Preview
Translate equations into English sentences and translate English sentences into equations. Read the equation or sentence and select word tiles or symbol tiles to form the corresponding...
Lesson Info Launch GizmoNumber Line Frog Hop (Addition and Subtraction)
5 Minute Preview
Live a frog's life as you hop along a number line in search of flies. Learn how addition and subtraction can be represented as movement along a number line. Fred the frog may even help you...
Lesson Info Launch GizmoWeathering
5 Minute Preview
Weathering is the breakdown of rock at Earth's surface through physical or chemical means. Students will learn about the different types of mechanical and chemical weathering, then use a...
Lesson Info Launch GizmoPeriod of Mass on a Spring
5 Minute Preview
Measure the period of a mass on the end of a spring. Determine the effects of gravitational acceleration, mass, and the spring constant on the period of the spring. Create an equation for...
Lesson Info Launch GizmoFreezing Point of Salt Water
5 Minute Preview
Control the temperature of a beaker of water. As the temperature drops below the freezing point, a transformation of state will occur that can be viewed on a molecular level. Salt can be...
Lesson Info Launch GizmoPlate Tectonics
5 Minute Preview
Move the Earth's crust at various locations to observe the effects of the motion of the tectonic plates, including volcanic eruptions. Information about each of the major types of plate...
Lesson Info Launch GizmoAdding and Subtracting Integers with Chips
5 Minute Preview
Use chips to model addition and subtraction of positives and negatives. Explore the effect of zero pairs. See how to use zero pairs to help special cases of addition and subtraction.
Lesson Info Launch GizmoCenter of Mass
5 Minute Preview
Drag blocks onto a two-dimensional surface and observe the effects on the center of mass. Use a grid to calculate the coordinates of the center of mass. Investigate predefined shapes or...
Lesson Info Launch GizmoCircuit Builder
- Free!
FREE with no time limit!
5 Minute Preview
Create circuits using batteries, light bulbs, switches, fuses, and a variety of materials. Examine series and parallel circuits, conductors and insulators, and the effects of battery...
Lesson Info Launch GizmoAnts on a Slant (Inclined Plane)
5 Minute Preview
Lift food using ants with the help of a slanted stick. The steepness of the stick, the number of ants, and the size of the item being lifted can be varied. Observe the effect of friction on...
Lesson Info Launch GizmoMascot Election (Pictographs and Bar Graphs)
5 Minute Preview
A brand new school is opening and it is time to elect the school mascot! Students can choose the Eagle, Lion, Bear, or Wolf. Voting results can be displayed in a table, tally chart,...
Lesson Info Launch GizmoChemical Changes
5 Minute Preview
Chemical changes result in the formation of new substances. But how can you tell if a chemical change has occurred? Explore this question by observing and measuring a variety of chemical...
Lesson Info Launch GizmoEquivalent Algebraic Expressions I
5 Minute Preview
Grumpy’s Restaurant is now hiring! As a new chef at this underwater bistro, you’ll learn the basics of manipulating algebraic expressions. Learn how to make equivalent expressions using the...
Lesson Info Launch GizmoWater Contamination
- Stem Case
There has been an outbreak of legionnaires’ disease in a small town. This disease is caused by legionella bacteria that proliferate in contaminated water supplies. Students take on the role...
Lesson InfoHeredity and Traits
- Free!
- Stem Case
FREE with no time limit!
Video PreviewAs a bee scientist, students help a honey farm that has low honey production due to wasps. Students learn about bees, heredity and traits to determine which traits will help the bees defend...
Lesson InfoHoneybee Hive
- Free!
- New!
FREE with no time limit!
5 Minute Preview
Explore life in the hive by meeting workers, drones, and the queen bee herself! Visit flower patches to determine the best sources of food, and then perform a waggle dance to let the other...
Lesson Info Launch GizmoCircuit Builder
- Free!
FREE with no time limit!
5 Minute Preview
Create circuits using batteries, light bulbs, switches, fuses, and a variety of materials. Examine series and parallel circuits, conductors and insulators, and the effects of battery...
Lesson Info Launch GizmoPendulum Clock
- Free!
FREE with no time limit!
5 Minute Preview
Find the effect of length, mass, and angle on the period of a pendulum. The pendulum is attached to a clock that can be adjusted to tell time accurately. The clock can be located on Earth...
Lesson Info Launch GizmoCollision Theory
- Free!
FREE with no time limit!
5 Minute Preview
Observe a chemical reaction with and without a catalyst. Determine the effects of concentration, temperature, surface area, and catalysts on reaction rates. Reactant and product...
Lesson Info Launch GizmoPhases of the Moon
- Free!
FREE with no time limit!
5 Minute Preview
Understand the phases of the Moon by observing the positions of the Moon, Earth and Sun. A view of the Moon from Earth is shown on the right as the Moon orbits Earth. Learn the names of...
Lesson Info Launch GizmoFast Plants® 1 - Growth and Genetics
- Free!
- New!
FREE with no time limit!
5 Minute Preview
Grow Wisconsin Fast Plants® in a simulated lab environment. Explore the life cycles of these plants and how their growth is influenced by light, water, and crowding. Practice pollinating...
Lesson Info Launch GizmoSmelling in the Rain: Designing Solutions to Improve Air Quality
- Free!
- Stem Case
FREE with no time limit!
Video PreviewA respiratory physiologist is concerned about the number of asthma attacks in children within her community. On certain days, the number is higher than the respiratory physiologist might...
Lesson InfoDisease Spread
- Free!
- Updated!
FREE with no time limit!
5 Minute Preview
Observe the spread of disease through a group of people. The methods of transmission can be chosen and include person-to-person, airborne, and foodborne as well as any combination thereof....
Lesson Info Launch GizmoSmelling in the Rain: Designing Solutions to Improve Air Quality
- Free!
- Stem Case
FREE with no time limit!
Video Preview
A respiratory physiologist is concerned about the number of asthma attacks in children within her community. On certain days, the number is higher than the respiratory physiologist might...
Lesson InfoDiffusion
- Stem Case
Video Preview
As a physician assistant, students must learn about diffusion to save the life of a person poisoned by chlorine gas that was released into a small town following a train crash.
Lesson InfoEcosystems
- Stem Case
Video Preview
As a national park ranger, students must restore the ecosystem of a park back to normal. They interact with populations of many organisms including wolves, deer and bees. Students learn the...
Lesson InfoCell Respiration
- Stem Case
Video Preview
As a medical toxicologist, students learn about cell respiration to save the life of a CIA agent that has been poisoned.
Lesson InfoFruit Production and the Environment
- Stem Case
Video Preview
As an agricultural scientist, students help a strawberry farmer who is having problems with low fruit production. Students learn about the factors involved in fruit production including...
Lesson InfoHeredity and Traits
- Free!
- Stem Case
FREE with no time limit!
Video Preview
As a bee scientist, students help a honey farm that has low honey production due to wasps. Students learn about bees, heredity and traits to determine which traits will help the bees defend...
Lesson InfoNitrogen Cycle
- Stem Case
Video Preview
An infant on a farm has blue baby syndrome. As an EPA environmental engineer, students must find the cause of the baby's illness. Using environment data, students learn the importance of...
Lesson InfoWater Contamination
- Stem Case
Video Preview
There has been an outbreak of legionnaires’ disease in a small town. This disease is caused by legionella bacteria that proliferate in contaminated water supplies. Students take on the role...
Lesson InfoEffect of Environment on New Life Form
5 Minute Preview
Using the scientific method, control the environmental conditions for a fictional alien organism in order to learn how the organism responds to changes in conditions. Sunlight, water, and temperature can be varied to determine their effects on the shape of the aliens.
Lesson Info Launch GizmoCoriolis Effect
- New!
5 Minute Preview
The Coriolis effect causes winds to be deflected as they move across Earth's surface, resulting in circular patterns of winds. This effect is caused by two factors, Earth's rotation and frame of reference. In the Coriolis Effect Gizmo, students will build their understanding of this phenomenon using the analogy of two kids playing catch: first on a train, then on a merry-go-round, and finally on Earth's surface.
Lesson Info Launch GizmoHalf-life
5 Minute Preview
Investigate the decay of a radioactive substance. The half-life and the number of radioactive atoms can be adjusted, and theoretical or random decay can be observed. Data can be interpreted visually using a dynamic graph, a bar chart, and a table. Determine the half-lives of two sample isotopes as well as samples with randomly generated half-lives.
Lesson Info Launch GizmoGMOs and the Environment
- New!
5 Minute Preview
In this follow-up to the Genetic Engineering Gizmo, explore how farmers can maximize yield while limiting ecosystem damage using genetically modified corn. Choose the corn type to plant and the amount of herbicide and insecticide to use, then measure corn yields and monitor wildlife populations and diversity. Observe the long-term effects of pollutants on a nearby stream ecosystem.
Lesson Info Launch GizmoGreenhouse Effect
5 Minute Preview
Within this simulated region of land, daytime's rising temperature and the falling temperature at night can be measured, along with heat flow in and out of the system. The level of greenhouse gases present in the atmosphere at any given time can be adjusted, allowing the long-term effects to be investigated.
Lesson Info Launch GizmoPhotoelectric Effect
5 Minute Preview
Shoot a beam of light at a metal plate in a virtual lab and observe the effect on surface electrons. The type of metal as well as the wavelength and amount of light can be adjusted. An electric field can be created to resist the electrons and measure their initial energies.
Lesson Info Launch GizmoGreenhouse Effect - Metric
5 Minute Preview
Within this simulated region of land, daytime's rising temperature and the falling temperature at night can be measured, along with heat flow in and out of the system. The amount of greenhouse gases present in the atmosphere can be adjusted through time, and the long-term effects can be investigated.
Lesson Info Launch GizmoQuadratics in Vertex Form
5 Minute Preview
Compare the graph of a quadratic to its equation in vertex form. Vary the terms of the equation and explore how the graph changes in response.
Lesson Info Launch GizmoPenumbra Effect
5 Minute Preview
Observe the partial shadows cast by a rectangular block lit by multiple light sources. The number of light sources ranges from one to five, and individual lights can be turned on or off. The light spacing, block width, and distance from the lights to the block can be varied. Light intensity can be observed on a detector.
Lesson Info Launch GizmoQuadratics in Polynomial Form
5 Minute Preview
Compare the graph of a quadratic to its equation in polynomial form. Vary the coefficients of the equation and explore how the graph changes in response.
Lesson Info Launch GizmoStandard Form of a Line
5 Minute Preview
Compare the standard form of a linear equation to its graph. Vary the coefficients and explore how the graph changes in response.
Lesson Info Launch GizmoPoint-Slope Form of a Line
5 Minute Preview
Compare the point-slope form of a linear equation to its graph. Vary the coefficients and explore how the graph changes in response.
Lesson Info Launch GizmoSlope-Intercept Form of a Line
5 Minute Preview
Compare the slope-intercept form of a linear equation to its graph. Vary the coefficients and explore how the graph changes in response.
Lesson Info Launch GizmoQuadratics in Factored Form
5 Minute Preview
Investigate the factors of a quadratic through its graph and through its equation. Vary the roots of the quadratic and examine how the graph and the equation change in response.
Lesson Info Launch GizmoSolving Linear Systems (Standard Form)
5 Minute Preview
Solve systems of linear equations, written in standard form. Explore what it means to solve systems algebraically (with substitution or elimination) and graphically. Also, use a draggable green point to see what it means when (x, y) values are solutions of an equation, or of a system of equations.
Lesson Info Launch GizmoGeneral Form of a Rational Function
5 Minute Preview
Compare the equation of a rational function to its graph. Multiply or divide the numerator and denominator by linear factors and explore how the graph changes in response.
Lesson Info Launch GizmoSolving Linear Systems (Slope-Intercept Form)
5 Minute Preview
Solve systems of linear equations, given in slope-intercept form, both graphically and algebraically. Use a draggable green point to examine what it means for an
Systems of Linear Inequalities (Slope-intercept form)
5 Minute Preview
Compare a system of linear inequalities to its graph. Vary the coefficients and inequality symbols in the system and explore how the boundary lines, shaded regions, and the intersection of the shaded regions change in response.
Lesson Info Launch GizmoRabbit Population by Season
5 Minute Preview
Observe the population of rabbits in an environment over many years. The land available to the rabbits and weather conditions can be adjusted to investigate the effects of urban sprawl and unusual weather on wildlife populations.
Lesson Info Launch GizmoDoppler Shift
5 Minute Preview
Observe sound waves emitted from a moving vehicle. Measure the frequency of sound waves in front of and behind the vehicle as it moves, illustrating the Doppler effect. The frequency of sound waves, speed of the source, and the speed of sound can all be manipulated. Motion of the vehicle can be linear, oscillating, or circular.
Lesson Info Launch GizmoFast Plants® 1 - Growth and Genetics
- Free!
- New!
FREE with no time limit!
5 Minute Preview
Grow Wisconsin Fast Plants® in a simulated lab environment. Explore the life cycles of these plants and how their growth is influenced by light, water, and crowding. Practice pollinating the plants using bee sticks, then observe the traits of the offspring plants. Use Punnett squares to model the inheritance of genes for stem color and leaf color for these plants.
Lesson Info Launch GizmoZap It! Game
5 Minute Preview
Adjust the values in a quadratic function, in vertex form or in polynomial form, to "zap" as many data points as possible.
Lesson Info Launch GizmoMoonrise, Moonset, and Phases
5 Minute Preview
Gain an understanding of moonrise and moonset times by observing the relative positions of Earth and the Moon along with a view of the Moon from Earth. A line shows the horizon for a person standing on Earth so that moonrise and moonset times can be determined.
Lesson Info Launch GizmoSmelling in the Rain: Designing Solutions to Improve Air Quality
- Free!
- Stem Case
FREE with no time limit!
Video Preview
A respiratory physiologist is concerned about the number of asthma attacks in children within her community. On certain days, the number is higher than the respiratory physiologist might expect. She thinks something in the environment is causing more rescue inhaler use on those days. As an air quality engineer, students will work collaboratively with a respiratory physiologist to learn how some air pollutants are released directly from sources while others are formed through chemical reactions. Students will develop a system model to test design solutions to recommend a plan to help decrease air pollution in a community with a record number of asthma cases in children.
Lesson InfoSeed Germination
5 Minute Preview
Perform experiments with several seed types to see what conditions yield the highest germination (sprouting) rate. Three different types of seeds can be studied, and the temperature, water and light in the germination chamber can be controlled. No two trials will have the same result so repeated trials are recommended.
Lesson Info Launch GizmoFood Chain
5 Minute Preview
In this ecosystem consisting of hawks, snakes, rabbits and grass, the population of each species can be studied as part of a food chain. Disease can be introduced for any species, and the number of animals can be increased or decreased at any time, just like in the real world.
Lesson Info Launch GizmoTemperature and Sex Determination
5 Minute Preview
Observe the sex ratios of birds and geckos as they hatch in an incubator. Vary the temperature of the incubator and measure the percentages of male and female hatchlings to determine if temperature has an effect on sex.
Lesson Info Launch GizmoTemperature and Sex Determination - Metric
5 Minute Preview
Observe the sex ratios of birds and geckos as they hatch in an incubator. Vary the temperature of the incubator and measure the percentages of male and female hatchlings to determine if temperature has an effect on sex.
Lesson Info Launch GizmoWater Pollution
5 Minute Preview
Get to know the four main types of pollution present in the environment, and then look at a variety of real-world examples as you try to guess what type of pollution is represented by each situation. All of the real-world situations can be viewed every day in different parts of the world.
Lesson Info Launch GizmoDiffusion
- Stem Case
Video Preview
As a physician assistant, students must learn about diffusion to save the life of a person poisoned by chlorine gas that was released into a small town following a train crash.
Lesson InfoPhases of the Moon
- Free!
FREE with no time limit!
5 Minute Preview
Understand the phases of the Moon by observing the positions of the Moon, Earth and Sun. A view of the Moon from Earth is shown on the right as the Moon orbits Earth. Learn the names of Moon phases and in what order they occur. Click Play to watch the Moon go around, or click Pause and drag the Moon yourself.
Lesson Info Launch GizmoEcosystems
- Stem Case
Video Preview
As a national park ranger, students must restore the ecosystem of a park back to normal. They interact with populations of many organisms including wolves, deer and bees. Students learn the importance of food chains and webs, and how human factors can impact the health of an environment.
Lesson InfoNatural Selection
5 Minute Preview
You are a bird hunting moths (both dark and light) that live on trees. As you capture the moths most easily visible against the tree surface, the moth populations change, illustrating the effects of natural selection.
Lesson Info Launch GizmoRoad Trip (Problem Solving)
5 Minute Preview
Plan a cross-country road trip through various U.S. state capitals. First choose a vehicle to drive, and then fill up the tank with gas and go! Find the range and gas mileage of each vehicle, and discover the shortest path between two cities.
Lesson Info Launch GizmoHoneybee Hive
- Free!
- New!
FREE with no time limit!
5 Minute Preview
Explore life in the hive by meeting workers, drones, and the queen bee herself! Visit flower patches to determine the best sources of food, and then perform a waggle dance to let the other bees know where to go. Can you help the bees find enough food to save the hive?
Lesson Info Launch GizmoRNA and Protein Synthesis
- Updated!
5 Minute Preview
Go through the process of synthesizing proteins through RNA transcription and translation. Learn about the many steps involved in protein synthesis including: unzipping of DNA, formation of mRNA, attaching of mRNA to the ribosome, and linking of amino acids to form a protein.
Lesson Info Launch GizmoParamecium Homeostasis
5 Minute Preview
Observe how a paramecium maintains stable internal conditions in a changing aquatic environment. Water moves into the organism by osmosis, and is pumped out by the contractile vacuole. The concentration of solutes in the water will determine the rate of contractions in the paramecium.
Lesson Info Launch GizmoCollision Theory
- Free!
FREE with no time limit!
5 Minute Preview
Observe a chemical reaction with and without a catalyst. Determine the effects of concentration, temperature, surface area, and catalysts on reaction rates. Reactant and product concentrations through time are recorded, and the speed of the simulation can be adjusted by the user.
Lesson Info Launch GizmoDisease Spread
- Free!
- Updated!
FREE with no time limit!
5 Minute Preview
Observe the spread of disease through a group of people. The methods of transmission can be chosen and include person-to-person, airborne, and foodborne as well as any combination thereof. The probability of each form of transmission and number of people in the group can also be adjusted.
Lesson Info Launch GizmoCell Respiration
- Stem Case
Video Preview
As a medical toxicologist, students learn about cell respiration to save the life of a CIA agent that has been poisoned.
Lesson InfoDoppler Shift Advanced
5 Minute Preview
Derive an equation to calculate the frequency of an oncoming sound source and a receding sound source. Also, calculate the Doppler shift that results from a moving observer and a stationary sound source. The source velocity, sound velocity, observer velocity, and sound frequency can all be manipulated.
Lesson Info Launch GizmoReverse the Field
5 Minute Preview
Measure the time required to write a word when the mouse behaves in a normal fashion and when the direction of motion is reversed from left to right, up to down, or both. Run several experiments in each mode to see if your brain and muscles are able to adapt to the new direction of motion. Determine which type of inversion is easiest to adjust to and whether you can train yourself to function normally when the inversion is present.
Lesson Info Launch GizmoWater Cycle
5 Minute Preview
Control the path of a drop of water as it travels through the water cycle. Many alternatives are presented at each stage. Determine how the water moves from one location to another, and learn how water resources are distributed in these locations.
Lesson Info Launch GizmoPrairie Ecosystem
5 Minute Preview
Observe the populations of grass, prairie dogs, ferrets and foxes in a prairie ecosystem. Investigate feeding relationships and determine the food chain. Bar graphs and line graphs show changes in populations over time.
Lesson Info Launch GizmoPond Ecosystem
5 Minute Preview
Measure the temperature and oxygen content of a pond over the course of a day. Then go fishing to see what types of fish live in the pond. Many different ponds can be investigated to determine the influence of time, temperature, and farms on oxygen levels.
Lesson Info Launch GizmoBiconditional Statements
5 Minute Preview
Make a biconditional statement from a given definition using word tiles. Use both symbolic form and standard English form.
Lesson Info Launch GizmoConditional Statements
5 Minute Preview
Make a conditional statement from a given fact using word tiles. Use both symbolic form and standard English form.
Lesson Info Launch GizmoFruit Production
- Stem Case
Video Preview
As an agricultural scientist, students help a strawberry farmer who is having problems with low fruit production. Students learn about the factors involved in fruit production including plant nutrients, pollination and bees, and the interaction with the environment.
Lesson InfoMicroevolution
5 Minute Preview
Observe the effect of predators on a population of parrots with three possible genotypes. The initial percentages and fitness levels of each genotype can be set. Determine how initial fitness levels affect genotype and allele frequencies through several generations. Compare scenarios in which a dominant allele is deleterious, a recessive allele is deleterious, and the heterozygous individual is fittest.
Lesson Info Launch GizmoHeredity and Traits
- Free!
- Stem Case
FREE with no time limit!
Video Preview
As a bee scientist, students help a honey farm that has low honey production due to wasps. Students learn about bees, heredity and traits to determine which traits will help the bees defend their hives against the wasps. They then pick a new queen bee to pass on these traits to the bee colony.
Lesson InfoGrowing Plants
- Updated!
5 Minute Preview
Investigate the growth of three common garden plants: tomatoes, beans, and turnips. You can change the amount of light each plant gets, the amount of water added each day, and the type of soil the seed is planted in. Observe the effect of each variable on plant height, plant mass, leaf color and leaf size. Determine what conditions produce the tallest and healthiest plants. Height and mass data are displayed on tables and graphs.
Lesson Info Launch GizmoImproper Fractions and Mixed Numbers
5 Minute Preview
Represent a quantity given by a shaded region as an improper fraction and as a mixed number. Experiment with different shaded regions sliced differently.
Lesson Info Launch GizmoFeel the Heat
- New!
5 Minute Preview
Have you ever used a glove warmer to keep your hands warm? How about an instant cold pack to treat an injury? In the Feel the Heat Gizmo, create your own hot and cold packs using various salts dissolved in water and different bag materials. Learn about exothermic and endothermic processes and how energy is absorbed or released when bonds are broken and new bonds form.
Lesson Info Launch GizmoPendulum Clock
- Free!
FREE with no time limit!
5 Minute Preview
Find the effect of length, mass, and angle on the period of a pendulum. The pendulum is attached to a clock that can be adjusted to tell time accurately. The clock can be located on Earth or Jupiter to determine the effect of gravity.
Lesson Info Launch GizmoPeriodic Trends
- New!
5 Minute Preview
Explore trends in atomic radius, ionization energy, and electron affinity in the periodic table. Measure atomic radius with a ruler and model ionization energy and electron affinity by exploring how easy it is to remove electrons and how strongly atoms attract additional electrons. View these properties on the whole periodic table to see how they vary across periods and down groups.
Lesson Info Launch GizmoDividing Mixed Numbers
5 Minute Preview
Choose the correct steps to divide mixed numbers. Use step-by-step feedback to diagnose and correct incorrect steps.
Lesson Info Launch GizmoEstimating Sums and Differences
5 Minute Preview
Estimate the sum or difference of two fractions using area models. Compare estimates to exact sums and differences.
Lesson Info Launch GizmoDilations
5 Minute Preview
Dilate a figure and investigate its resized image. See how scaling a figure affects the coordinates of its vertices, both in
Percents, Fractions, and Decimals
5 Minute Preview
Compare a quantity represented by an area with its percent, fraction, and decimal forms.
Lesson Info Launch GizmoPart-to-part and Part-to-whole Ratios
5 Minute Preview
Compare a ratio represented by an area with its percent, fraction, and decimal forms.
Lesson Info Launch GizmoNitrogen Cycle
- Stem Case
Video Preview
An infant on a farm has blue baby syndrome. As an EPA environmental engineer, students must find the cause of the baby's illness. Using environment data, students learn the importance of the nitrogen cycle and how human factors can impact nature.
Lesson InfoCannonball Clowns (Number Line Estimation)
5 Minute Preview
Launch clowns from a circus cannon and try to hit the target. Drag digit cards on the control panel to set the launch distance and choose an appropriate unit of distance. After practicing your clown-launching skills on a number line, move on to the Big Top, Football Field, School Buses, the Golden Gate Bridge, and more!
Lesson Info Launch GizmoUsing Algebraic Equations
5 Minute Preview
Translate equations into English sentences and translate English sentences into equations. Read the equation or sentence and select word tiles or symbol tiles to form the corresponding sentence or equation.
Lesson Info Launch GizmoNumber Line Frog Hop (Addition and Subtraction)
5 Minute Preview
Live a frog's life as you hop along a number line in search of flies. Learn how addition and subtraction can be represented as movement along a number line. Fred the frog may even help you get better at adding and subtracting two-digit numbers in your head by decomposing them into tens and ones.
Lesson Info Launch GizmoWeathering
5 Minute Preview
Weathering is the breakdown of rock at Earth's surface through physical or chemical means. Students will learn about the different types of mechanical and chemical weathering, then use a simulation to model the effects of weathering on different types of rocks in varying climate conditions.
Lesson Info Launch GizmoPeriod of Mass on a Spring
5 Minute Preview
Measure the period of a mass on the end of a spring. Determine the effects of gravitational acceleration, mass, and the spring constant on the period of the spring. Create an equation for the period of a spring given its mass and spring constant.
Lesson Info Launch GizmoFreezing Point of Salt Water
5 Minute Preview
Control the temperature of a beaker of water. As the temperature drops below the freezing point, a transformation of state will occur that can be viewed on a molecular level. Salt can be added to the water to see its effect on the freezing point of water.
Lesson Info Launch GizmoPlate Tectonics
5 Minute Preview
Move the Earth's crust at various locations to observe the effects of the motion of the tectonic plates, including volcanic eruptions. Information about each of the major types of plate boundaries is shown, along with their locations on Earth.
Lesson Info Launch GizmoAdding and Subtracting Integers with Chips
5 Minute Preview
Use chips to model addition and subtraction of positives and negatives. Explore the effect of zero pairs. See how to use zero pairs to help special cases of addition and subtraction.
Lesson Info Launch GizmoCenter of Mass
5 Minute Preview
Drag blocks onto a two-dimensional surface and observe the effects on the center of mass. Use a grid to calculate the coordinates of the center of mass. Investigate predefined shapes or your own arrangements of blocks.
Lesson Info Launch GizmoCircuit Builder
- Free!
FREE with no time limit!
5 Minute Preview
Create circuits using batteries, light bulbs, switches, fuses, and a variety of materials. Examine series and parallel circuits, conductors and insulators, and the effects of battery voltage. Thousands of different circuits can be built with this Gizmo.
Lesson Info Launch GizmoAnts on a Slant (Inclined Plane)
5 Minute Preview
Lift food using ants with the help of a slanted stick. The steepness of the stick, the number of ants, and the size of the item being lifted can be varied. Observe the effect of friction on sliding objects.
Lesson Info Launch GizmoMascot Election (Pictographs and Bar Graphs)
5 Minute Preview
A brand new school is opening and it is time to elect the school mascot! Students can choose the Eagle, Lion, Bear, or Wolf. Voting results can be displayed in a table, tally chart, pictograph, bar graph, circle graph, or dot plot. You can change student votes by selecting a group of students and clicking a mascot.
Lesson Info Launch GizmoChemical Changes
5 Minute Preview
Chemical changes result in the formation of new substances. But how can you tell if a chemical change has occurred? Explore this question by observing and measuring a variety of chemical reactions. Along the way you will learn about chemical equations, acids and bases, exothermic and endothermic reactions, and conservation of matter.
Lesson Info Launch GizmoEquivalent Algebraic Expressions I
5 Minute Preview
Grumpy’s Restaurant is now hiring! As a new chef at this underwater bistro, you’ll learn the basics of manipulating algebraic expressions. Learn how to make equivalent expressions using the Commutative and Associative properties, how to handle pesky subtraction and division, and how to identify equivalent and non-equivalent expressions.
Lesson Info Launch GizmoWater Contamination
- Stem Case
Video Preview
There has been an outbreak of legionnaires’ disease in a small town. This disease is caused by legionella bacteria that proliferate in contaminated water supplies. Students take on the role of a civil engineer to investigate how the water treatment plant has failed to get rid of all the contaminants in the water and design a new method.
Lesson InfoHeredity and Traits
- Free!
- Stem Case
FREE with no time limit!
Video Preview
As a bee scientist, students help a honey farm that has low honey production due to wasps. Students learn about bees, heredity and traits to determine which traits will help the bees defend their hives against the wasps. They then pick a new queen bee to pass on these traits to the bee colony.
Lesson InfoHoneybee Hive
- Free!
- New!
FREE with no time limit!
5 Minute Preview
Explore life in the hive by meeting workers, drones, and the queen bee herself! Visit flower patches to determine the best sources of food, and then perform a waggle dance to let the other bees know where to go. Can you help the bees find enough food to save the hive?
Lesson Info Launch GizmoCircuit Builder
- Free!
FREE with no time limit!
5 Minute Preview
Create circuits using batteries, light bulbs, switches, fuses, and a variety of materials. Examine series and parallel circuits, conductors and insulators, and the effects of battery voltage. Thousands of different circuits can be built with this Gizmo.
Lesson Info Launch GizmoPendulum Clock
- Free!
FREE with no time limit!
5 Minute Preview
Find the effect of length, mass, and angle on the period of a pendulum. The pendulum is attached to a clock that can be adjusted to tell time accurately. The clock can be located on Earth or Jupiter to determine the effect of gravity.
Lesson Info Launch GizmoCollision Theory
- Free!
FREE with no time limit!
5 Minute Preview
Observe a chemical reaction with and without a catalyst. Determine the effects of concentration, temperature, surface area, and catalysts on reaction rates. Reactant and product concentrations through time are recorded, and the speed of the simulation can be adjusted by the user.
Lesson Info Launch GizmoPhases of the Moon
- Free!
FREE with no time limit!
5 Minute Preview
Understand the phases of the Moon by observing the positions of the Moon, Earth and Sun. A view of the Moon from Earth is shown on the right as the Moon orbits Earth. Learn the names of Moon phases and in what order they occur. Click Play to watch the Moon go around, or click Pause and drag the Moon yourself.
Lesson Info Launch GizmoFast Plants® 1 - Growth and Genetics
- Free!
- New!
FREE with no time limit!
5 Minute Preview
Grow Wisconsin Fast Plants® in a simulated lab environment. Explore the life cycles of these plants and how their growth is influenced by light, water, and crowding. Practice pollinating the plants using bee sticks, then observe the traits of the offspring plants. Use Punnett squares to model the inheritance of genes for stem color and leaf color for these plants.
Lesson Info Launch GizmoSmelling in the Rain: Designing Solutions to Improve Air Quality
- Free!
- Stem Case
FREE with no time limit!
Video Preview
A respiratory physiologist is concerned about the number of asthma attacks in children within her community. On certain days, the number is higher than the respiratory physiologist might expect. She thinks something in the environment is causing more rescue inhaler use on those days. As an air quality engineer, students will work collaboratively with a respiratory physiologist to learn how some air pollutants are released directly from sources while others are formed through chemical reactions. Students will develop a system model to test design solutions to recommend a plan to help decrease air pollution in a community with a record number of asthma cases in children.
Lesson InfoDisease Spread
- Free!
- Updated!
FREE with no time limit!
5 Minute Preview
Observe the spread of disease through a group of people. The methods of transmission can be chosen and include person-to-person, airborne, and foodborne as well as any combination thereof. The probability of each form of transmission and number of people in the group can also be adjusted.
Lesson Info Launch GizmoSmelling in the Rain: Designing Solutions to Improve Air Quality
- Free!
- Stem Case
FREE with no time limit!
Video Preview
A respiratory physiologist is concerned about the number of asthma attacks in children within her community. On certain days, the number is higher than the respiratory physiologist might expect. She thinks something in the environment is causing more rescue inhaler use on those days. As an air quality engineer, students will work collaboratively with a respiratory physiologist to learn how some air pollutants are released directly from sources while others are formed through chemical reactions. Students will develop a system model to test design solutions to recommend a plan to help decrease air pollution in a community with a record number of asthma cases in children.
Lesson InfoDiffusion
- Stem Case
Video Preview
As a physician assistant, students must learn about diffusion to save the life of a person poisoned by chlorine gas that was released into a small town following a train crash.
Lesson InfoEcosystems
- Stem Case
Video Preview
As a national park ranger, students must restore the ecosystem of a park back to normal. They interact with populations of many organisms including wolves, deer and bees. Students learn the importance of food chains and webs, and how human factors can impact the health of an environment.
Lesson InfoCell Respiration
- Stem Case
Video Preview
As a medical toxicologist, students learn about cell respiration to save the life of a CIA agent that has been poisoned.
Lesson InfoFruit Production and the Environment
- Stem Case
Video Preview
As an agricultural scientist, students help a strawberry farmer who is having problems with low fruit production. Students learn about the factors involved in fruit production including plant nutrients, pollination and bees, and the interaction with the environment.
Lesson InfoHeredity and Traits
- Free!
- Stem Case
FREE with no time limit!
Video Preview
As a bee scientist, students help a honey farm that has low honey production due to wasps. Students learn about bees, heredity and traits to determine which traits will help the bees defend their hives against the wasps. They then pick a new queen bee to pass on these traits to the bee colony.
Lesson InfoNitrogen Cycle
- Stem Case
Video Preview
An infant on a farm has blue baby syndrome. As an EPA environmental engineer, students must find the cause of the baby's illness. Using environment data, students learn the importance of the nitrogen cycle and how human factors can impact nature.
Lesson InfoWater Contamination
- Stem Case
Video Preview
There has been an outbreak of legionnaires’ disease in a small town. This disease is caused by legionella bacteria that proliferate in contaminated water supplies. Students take on the role of a civil engineer to investigate how the water treatment plant has failed to get rid of all the contaminants in the water and design a new method.
Lesson InfoFind Your Solution
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