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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.
Digestive System
5 Minute Preview
Digestion is a complex process, involving a wide variety of organs and chemicals that work together to break down food, absorb nutrients, and eliminate wastes. But have you ever wondered...
Lesson Info Launch GizmoNumber Systems
5 Minute Preview
Explore number systems and convert numbers from one base to another using counter beads in place-value columns.
Lesson Info Launch GizmoSolar System
5 Minute Preview
Explore our solar system and learn the characteristics of each planet. Compare the sizes of planets and their distances from the Sun. Observe the speeds of planetary orbits and measure how...
Lesson Info Launch GizmoCirculatory System
5 Minute Preview
Trace the path of blood through a beating heart and the network of blood vessels that supplies blood to the body. Take blood samples from different blood vessels to observe blood cells and...
Lesson Info Launch GizmoSolar System Explorer
5 Minute Preview
Survey the solar system, observing the length of a year and the orbital path of each object. The positions of the eight official planets are displayed, as well as one dwarf planet, Pluto....
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 GizmoCat and Mouse (Modeling with Linear Systems)
5 Minute Preview
Experiment with a system of two lines representing a cat-and-mouse chase. Adjust the speeds of the cat and mouse and the head start of the mouse, and immediately see the effects on the...
Lesson Info Launch GizmoSolving Linear Systems (Matrices and Special Solutions)
5 Minute Preview
Explore systems of linear equations, and how many solutions a system can have. Express systems in matrix form. See how the determinant of the coefficient matrix reveals how many solutions a...
Lesson Info Launch GizmoEnergy Conversion in a System
5 Minute Preview
A falling cylinder is attached to a rotating propeller that stirs and heats the water in a beaker. The mass and height of the cylinder, as well as the quantity and initial temperature of...
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 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 GizmoCat and Mouse (Modeling with Linear Systems) - Metric
5 Minute Preview
Experiment with a system of two lines representing a cat-and-mouse chase. Adjust the speeds of the cat and mouse and the head start of the mouse, and immediately see the effects on the...
Lesson Info Launch GizmoPulley Lab
5 Minute Preview
Use a pulley system to lift a heavy weight to a certain height. Measure the force required to lift the weight using up to three fixed and three movable pulleys. The weight to be lifted and...
Lesson Info Launch GizmoFrog Dissection
- New!
5 Minute Preview
Use a scalpel, forceps, and pins to dissect realistic male and female frogs. Organs can be removed and placed into organ system diagrams. Once the dissections are complete, the frog organ...
Lesson Info Launch GizmoWeather Maps
5 Minute Preview
Learn about standard symbols used in meteorology to construct weather maps. Rain, sleet, snow, temperature, cloud cover, wind speed and direction, and atmospheric pressure can all be...
Lesson Info Launch GizmoWeather Maps - Metric
5 Minute Preview
Learn about standard symbols used in meteorology to construct weather maps. Rain, sleet, snow, temperature, cloud cover, wind speed and direction, and atmospheric pressure can all be...
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 GizmoDistance Formula
5 Minute Preview
Explore the distance formula as an application of the Pythagorean theorem. Learn to see any two points as the endpoints of the hypotenuse of a right triangle. Drag those points and...
Lesson Info Launch GizmoComparing Earth and Venus
5 Minute Preview
Observe the motions of Venus and Earth as the planets move around the Sun. Measure the length of a day and a year on Earth and Venus, and compare the length of a solar day to the length of...
Lesson Info Launch GizmoBeam to Moon (Ratios and Proportions) - Metric
5 Minute Preview
Apply ratios and proportions to find the weight of a person on the moon (or on another planet). Weigh an object on Earth and on the moon and weigh the person on Earth. Then set up and solve...
Lesson Info Launch GizmoBeam to Moon (Ratios and Proportions)
- Free!
FREE with no time limit!
5 Minute Preview
Apply ratios and proportions to find the weight of a person on the moon (or on another planet). Weigh an object on Earth and on the moon and weigh the person on Earth. Then set up and solve...
Lesson Info Launch GizmoOsmosis
5 Minute Preview
Adjust the concentration of a solute on either side of a membrane in a cell and observe the system as it adjusts to the conditions through osmosis. The initial concentration of the solute...
Lesson Info Launch GizmoPoints in the Coordinate Plane
5 Minute Preview
Identify the coordinates of a point in the coordinate plane. Drag the point in the plane and investigate how the coordinates change 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 Gizmo2D Eclipse
5 Minute Preview
Manipulate the position of the Moon to model solar and lunar eclipses. View Earth's shadow, the Moon's shadow, or both. Observe the Moon and Sun from Earth during a partial and total...
Lesson Info Launch GizmoUnit Conversions
5 Minute Preview
Use unit conversion tiles to convert from one unit to another. Tiles can be flipped to cancel units. Convert between metric units or between metric and U.S. customary units. Solve distance,...
Lesson Info Launch GizmoExponential Growth and Decay
5 Minute Preview
Explore the graph of the exponential growth or decay function. Vary the initial amount and the rate of growth or decay and investigate the changes to the graph.
Lesson Info Launch GizmoEyes and Vision 1 - Seeing Color
- New!
5 Minute Preview
Observe how different colors of light are reflected or absorbed by colored objects. Determine that white light is a combination of different colors of light, and that one or more component...
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 GizmoEyes and Vision 2 - Focusing Light
- New!
5 Minute Preview
Once light enters the eye, it must be focused on the retina. Manipulate the pupil diameter to regulate the amount of light that enters then eye, then change the lens shape to focus light....
Lesson Info Launch GizmoEyes and Vision 3 - Sensing Light
- New!
5 Minute Preview
Observe how photoreceptors on the retina are stimulated by different colors of light. Determine that cone cells are stimulated by specific colors of light and enable us to see color, while...
Lesson Info Launch GizmoPythagorean Theorem
5 Minute Preview
Explore the Pythagorean Theorem using a dynamic right triangle. Examine a visual, geometric application of the Pythagorean Theorem, using the areas of squares on the sides of the triangle.
Lesson Info Launch GizmoPythagorean Theorem with a Geoboard
5 Minute Preview
Build right triangles in an interactive geoboard and build squares on the sides of the triangles to discover the Pythagorean Theorem.
Lesson Info Launch GizmoSound Off, Please!: Designing Solutions to Reduce Noise Pollution
- Stem Case
As an acoustic engineer, students will work with an urban planner to learn how noise pollution impacts a community. Students will develop a system model to test design solutions. Wave...
Lesson InfoGreenhouse 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 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 GizmoPulleys
5 Minute Preview
Lift a variety of heavy objects (armchair, safe, piano) using pulleys and a rope. Systems of one, two, four, or six pulleys can be used. Up to six people can be used to pull on the rope,...
Lesson Info Launch GizmoTreasure Hunter (Decimals on the Number Line)
5 Minute Preview
Drive a desert highway searching for buried treasure. Learn to use the car's tens, ones, tenths, and hundredths gears, along with a GPS system (number line), to find the right place to dig....
Lesson Info Launch GizmoObserving Weather (Customary)
5 Minute Preview
How do scientists measure and describe the weather? In this introductory lesson, students will practice using a thermometer, anemometer, rain gauge, and hygrometer to record weather...
Lesson Info Launch GizmoObserving Weather (Metric)
5 Minute Preview
How do scientists measure and describe the weather? In this introductory lesson, students will practice using a thermometer, anemometer, rain gauge, and hygrometer to record weather...
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 GizmoMuscles and Bones
- New!
5 Minute Preview
See how muscles, bones, and connective tissue work together to allow movement. Observe how muscle contraction arises from the interactions of thin and thick filaments in muscle cells. Using...
Lesson Info Launch GizmoLinear Programming
5 Minute Preview
Use the graph of the feasible region to find the maximum or minimum value of the objective function. Vary the coefficients of the objective function and vary the constraints. Explore how...
Lesson Info Launch GizmoHearing: Frequency and Volume
5 Minute Preview
Test your hearing range by listening to low-, medium-, and high-frequency sounds. Compare the relative loudness of sounds at each frequency to create an equal-loudness curve. In a quiet...
Lesson Info Launch GizmoHuman Homeostasis
5 Minute Preview
Adjust the levels of clothing, perspiration, and exercise to maintain a stable internal temperature as the external temperature changes. Water and blood sugar levels need to be replenished...
Lesson Info Launch GizmoDrug Dosage
5 Minute Preview
A drug prescription must be carefully planned to maximize benefit while avoiding an overdose. In this Gizmo, you can give a patient one or more pills and monitor the levels of medication in...
Lesson Info Launch GizmoOrbital Motion - Kepler's Laws
5 Minute Preview
Learn Kepler's three laws of planetary motion by examining the orbit of a planet around a star. The initial position, velocity, and mass of the planet can be varied as well as the mass of...
Lesson Info Launch GizmoGravity Pitch
5 Minute Preview
Imagine a gigantic pitcher standing on Earth, ready to hurl a huge baseball. What will happen as the ball is thrown harder and harder? Find out with the Gravity Pitch Gizmo. Observe the...
Lesson Info Launch GizmoBeat the Heat: Tackling Urban Heat Islands Using the Science of Energy
- Stem Case
Lake City's latest heat wave has more people in the hospital than ever before. Juan, a local student admitted to the hospital, lives in one of the hottest neighborhoods in the city....
Lesson InfoCalorimetry Lab
5 Minute Preview
Investigate how calorimetry can be used to find relative specific heat values when different substances are mixed with water. Modify initial mass and temperature values to see effects on...
Lesson Info Launch GizmoReaction Time 2 (Graphs and Statistics)
5 Minute Preview
Test your reaction time by catching a falling ruler or clicking a target. Create a data set of experiment results, and calculate the range, mode, median, and mean of your data. Data can be...
Lesson Info Launch GizmoReaction Time 1 (Graphs and Statistics)
5 Minute Preview
Test your reaction time by catching a falling ruler or clicking a target. Create a data set of experiment results, and calculate the range, mode, median, and mean of your data. Data can be...
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 GizmoMeiosis
- Free!
- New!
FREE with no time limit!
5 Minute Preview
Explore how sex cells are produced by the process of meiosis. Compare meiosis in male and female germ cells, and use crossovers to increase the number of possible gamete genotypes. Using...
Lesson Info Launch GizmoCladograms
- New!
5 Minute Preview
Based on the similarities and differences between different organisms, create branching diagrams called cladograms to show how they are related. Use both morphological data (physical...
Lesson Info Launch GizmoDye Elimination
5 Minute Preview
When a foreign substance such as a drug is ingested, it often remains in the bloodstream for a long time. This Gizmo models the elimination of substances from the bloodstream using water...
Lesson Info Launch GizmoSound Beats and Sine Waves
5 Minute Preview
Listen to and see interference patterns produced by sound waves with similar frequencies. Test your ability to distinguish and match sounds as musicians do when they tune their instruments....
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 InfoCrumple Zones
- Free!
- New!
FREE with no time limit!
5 Minute Preview
Design a car to protect a test dummy in a collision. Adjust the length and stiffness of the crumple zone and the rigidity of the safety cell to determine how the car will deform during the...
Lesson Info Launch GizmoProtein Synthesis
- Stem Case
As a pediatrician, students learn about genes and protein synthesis to try to help a baby girl named Lucy who has an immunodeficiency disease.
Lesson InfoBeam to Moon (Ratios and Proportions)
- Free!
FREE with no time limit!
5 Minute Preview
Apply ratios and proportions to find the weight of a person on the moon (or on another planet). Weigh an object on Earth and on the moon and weigh the person on Earth. Then set up and solve...
Lesson Info Launch GizmoCrumple Zones
- Free!
- New!
FREE with no time limit!
5 Minute Preview
Design a car to protect a test dummy in a collision. Adjust the length and stiffness of the crumple zone and the rigidity of the safety cell to determine how the car will deform during the...
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 InfoMeiosis
- Free!
- New!
FREE with no time limit!
5 Minute Preview
Explore how sex cells are produced by the process of meiosis. Compare meiosis in male and female germ cells, and use crossovers to increase the number of possible gamete genotypes. Using...
Lesson Info Launch GizmoSound Off, Please!: Designing Solutions to Reduce Noise Pollution
- Stem Case
Video Preview
As an acoustic engineer, students will work with an urban planner to learn how noise pollution impacts a community. Students will develop a system model to test design solutions. Wave...
Lesson InfoBeat the Heat: Tackling Urban Heat Islands Using the Science of Energy
- Stem Case
Video Preview
Lake City's latest heat wave has more people in the hospital than ever before. Juan, a local student admitted to the hospital, lives in one of the hottest neighborhoods in the city....
Lesson InfoSmelling 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 InfoProtein Synthesis
- Stem Case
Video Preview
As a pediatrician, students learn about genes and protein synthesis to try to help a baby girl named Lucy who has an immunodeficiency disease.
Lesson InfoDigestive System
5 Minute Preview
Digestion is a complex process, involving a wide variety of organs and chemicals that work together to break down food, absorb nutrients, and eliminate wastes. But have you ever wondered what would happen if some of those organs were eliminated, or if the sequence was changed? Can the digestive system be improved? Find out by designing your own digestive system with the Digestive System Gizmo.
Lesson Info Launch GizmoNumber Systems
5 Minute Preview
Explore number systems and convert numbers from one base to another using counter beads in place-value columns.
Lesson Info Launch GizmoSolar System
5 Minute Preview
Explore our solar system and learn the characteristics of each planet. Compare the sizes of planets and their distances from the Sun. Observe the speeds of planetary orbits and measure how long each planet takes to go around the Sun.
Lesson Info Launch GizmoCirculatory System
5 Minute Preview
Trace the path of blood through a beating heart and the network of blood vessels that supplies blood to the body. Take blood samples from different blood vessels to observe blood cells and measure the levels of oxygen, carbon dioxide, sugar, and urea.
Lesson Info Launch GizmoSolar System Explorer
5 Minute Preview
Survey the solar system, observing the length of a year and the orbital path of each object. The positions of the eight official planets are displayed, as well as one dwarf planet, Pluto. Learn about Kepler's Laws and how planets are classified.
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 GizmoCat and Mouse (Modeling with Linear Systems)
5 Minute Preview
Experiment with a system of two lines representing a cat-and-mouse chase. Adjust the speeds of the cat and mouse and the head start of the mouse, and immediately see the effects on the graph and on the chase. Connect real-world meaning to slope, y-intercept, and the intersection of lines.
Lesson Info Launch GizmoSolving Linear Systems (Matrices and Special Solutions)
5 Minute Preview
Explore systems of linear equations, and how many solutions a system can have. Express systems in matrix form. See how the determinant of the coefficient matrix reveals how many solutions a system of equations has. Also, use a draggable green point to see what it means for an (x, y) point to be a solution of an equation, or of a system of equations.
Lesson Info Launch GizmoEnergy Conversion in a System
5 Minute Preview
A falling cylinder is attached to a rotating propeller that stirs and heats the water in a beaker. The mass and height of the cylinder, as well as the quantity and initial temperature of water can be adjusted. The temperature of the water is measured as energy is converted from one form to another.
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 the shaded regions change 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
Cat and Mouse (Modeling with Linear Systems) - Metric
5 Minute Preview
Experiment with a system of two lines representing a cat-and-mouse chase. Adjust the speeds of the cat and mouse and the head start of the mouse, and immediately see the effects on the graph and on the chase. Connect real-world meaning to slope, y-intercept, and the intersection of lines.
Lesson Info Launch GizmoPulley Lab
5 Minute Preview
Use a pulley system to lift a heavy weight to a certain height. Measure the force required to lift the weight using up to three fixed and three movable pulleys. The weight to be lifted and the efficiency of the pulley system can be adjusted, and the height of the weight and the total input distance are reported.
Lesson Info Launch GizmoFrog Dissection
- New!
5 Minute Preview
Use a scalpel, forceps, and pins to dissect realistic male and female frogs. Organs can be removed and placed into organ system diagrams. Once the dissections are complete, the frog organ systems can be compared. Zooming, rotating, and panning tools are available to examine the frog from any angle.
Lesson Info Launch GizmoWeather Maps
5 Minute Preview
Learn about standard symbols used in meteorology to construct weather maps. Rain, sleet, snow, temperature, cloud cover, wind speed and direction, and atmospheric pressure can all be recorded at two different weather stations on a map. Describe weather patterns characteristic of high-pressure systems, low-pressure systems, warm fronts, and cold fronts.
Lesson Info Launch GizmoWeather Maps - Metric
5 Minute Preview
Learn about standard symbols used in meteorology to construct weather maps. Rain, sleet, snow, temperature, cloud cover, wind speed and direction, and atmospheric pressure can all be recorded at two different weather stations on a map. Describe weather patterns characteristic of high-pressure systems, low-pressure systems, warm fronts, and cold fronts.
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 GizmoDistance Formula
5 Minute Preview
Explore the distance formula as an application of the Pythagorean theorem. Learn to see any two points as the endpoints of the hypotenuse of a right triangle. Drag those points and examine changes to the triangle and the distance calculation.
Lesson Info Launch GizmoComparing Earth and Venus
5 Minute Preview
Observe the motions of Venus and Earth as the planets move around the Sun. Measure the length of a day and a year on Earth and Venus, and compare the length of a solar day to the length of a sidereal day.
Lesson Info Launch GizmoBeam to Moon (Ratios and Proportions) - Metric
5 Minute Preview
Apply ratios and proportions to find the weight of a person on the moon (or on another planet). Weigh an object on Earth and on the moon and weigh the person on Earth. Then set up and solve the proportion of the Earth weights to the moon weights.
Lesson Info Launch GizmoBeam to Moon (Ratios and Proportions)
- Free!
FREE with no time limit!
5 Minute Preview
Apply ratios and proportions to find the weight of a person on the moon (or on another planet). Weigh an object on Earth and on the moon and weigh the person on Earth. Then set up and solve the proportion of the Earth weights to the moon weights.
Lesson Info Launch GizmoOsmosis
5 Minute Preview
Adjust the concentration of a solute on either side of a membrane in a cell and observe the system as it adjusts to the conditions through osmosis. The initial concentration of the solute can be manipulated, along with the volume of the cell.
Lesson Info Launch GizmoPoints in the Coordinate Plane
5 Minute Preview
Identify the coordinates of a point in the coordinate plane. Drag the point in the plane and investigate how the coordinates change 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 Gizmo2D Eclipse
5 Minute Preview
Manipulate the position of the Moon to model solar and lunar eclipses. View Earth's shadow, the Moon's shadow, or both. Observe the Moon and Sun from Earth during a partial and total eclipse. The sizes of the three bodies and the Earth-Moon distance can be adjusted.
Lesson Info Launch GizmoUnit Conversions
5 Minute Preview
Use unit conversion tiles to convert from one unit to another. Tiles can be flipped to cancel units. Convert between metric units or between metric and U.S. customary units. Solve distance, time, speed, mass, volume, and density problems.
Lesson Info Launch GizmoExponential Growth and Decay
5 Minute Preview
Explore the graph of the exponential growth or decay function. Vary the initial amount and the rate of growth or decay and investigate the changes to the graph.
Lesson Info Launch GizmoEyes and Vision 1 - Seeing Color
- New!
5 Minute Preview
Observe how different colors of light are reflected or absorbed by colored objects. Determine that white light is a combination of different colors of light, and that one or more component colors may be reflected when white light is shone on an object. Understand that we see an object when light reflected from the object enters our eye.
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 GizmoEyes and Vision 2 - Focusing Light
- New!
5 Minute Preview
Once light enters the eye, it must be focused on the retina. Manipulate the pupil diameter to regulate the amount of light that enters then eye, then change the lens shape to focus light. Determine the changes in lens shape needed to maintain focus as the object distance changes. This is a followup to the Eyes and Vision 1 - Seeing Colors lesson.
Lesson Info Launch GizmoEyes and Vision 3 - Sensing Light
- New!
5 Minute Preview
Observe how photoreceptors on the retina are stimulated by different colors of light. Determine that cone cells are stimulated by specific colors of light and enable us to see color, while rod cells are stimulated by various colors and do not contribute to color vision. Experiment by varying the percentage of rod and cone cells in normal and dim light to see how rod cells help with night vision.
Lesson Info Launch GizmoPythagorean Theorem
5 Minute Preview
Explore the Pythagorean Theorem using a dynamic right triangle. Examine a visual, geometric application of the Pythagorean Theorem, using the areas of squares on the sides of the triangle.
Lesson Info Launch GizmoPythagorean Theorem with a Geoboard
5 Minute Preview
Build right triangles in an interactive geoboard and build squares on the sides of the triangles to discover the Pythagorean Theorem.
Lesson Info Launch GizmoSound Off, Please!: Designing Solutions to Reduce Noise Pollution
- Stem Case
Video Preview
As an acoustic engineer, students will work with an urban planner to learn how noise pollution impacts a community. Students will develop a system model to test design solutions. Wave properties of sound and how sound interacts with different surfaces will be explored and used as evidence to reduce noise pollution.
Lesson InfoGreenhouse 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 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 GizmoPulleys
5 Minute Preview
Lift a variety of heavy objects (armchair, safe, piano) using pulleys and a rope. Systems of one, two, four, or six pulleys can be used. Up to six people can be used to pull on the rope, which adds force (effort).
Lesson Info Launch GizmoTreasure Hunter (Decimals on the Number Line)
5 Minute Preview
Drive a desert highway searching for buried treasure. Learn to use the car's tens, ones, tenths, and hundredths gears, along with a GPS system (number line), to find the right place to dig. Plot your findings on a zoomable number line map. Can you become a master Treasure Hunter?
Lesson Info Launch GizmoObserving Weather (Customary)
5 Minute Preview
How do scientists measure and describe the weather? In this introductory lesson, students will practice using a thermometer, anemometer, rain gauge, and hygrometer to record weather conditions in a variety of locations and dates. This lesson uses U.S. customary units.
Lesson Info Launch GizmoObserving Weather (Metric)
5 Minute Preview
How do scientists measure and describe the weather? In this introductory lesson, students will practice using a thermometer, anemometer, rain gauge, and hygrometer to record weather conditions in a variety of locations and dates. This lesson uses metric units.
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 GizmoMuscles and Bones
- New!
5 Minute Preview
See how muscles, bones, and connective tissue work together to allow movement. Observe how muscle contraction arises from the interactions of thin and thick filaments in muscle cells. Using what you have learned, construct an arm that can lift a weight or throw a ball. Connective tissue, muscle composition, bone length, and tendon insertion point can all be manipulated to create an arm to lift the heaviest weight or throw a ball the fastest.
Lesson Info Launch GizmoLinear Programming
5 Minute Preview
Use the graph of the feasible region to find the maximum or minimum value of the objective function. Vary the coefficients of the objective function and vary the constraints. Explore how the graph of the feasible region changes in response.
Lesson Info Launch GizmoHearing: Frequency and Volume
5 Minute Preview
Test your hearing range by listening to low-, medium-, and high-frequency sounds. Compare the relative loudness of sounds at each frequency to create an equal-loudness curve. In a quiet room, measure your threshold of audibility for each frequency, and compare your results to others. The volume of each sound can be adjusted.
Lesson Info Launch GizmoHuman Homeostasis
5 Minute Preview
Adjust the levels of clothing, perspiration, and exercise to maintain a stable internal temperature as the external temperature changes. Water and blood sugar levels need to be replenished regularly, and fatigue occurs with heavy exercise. Severe hypothermia, heat stroke, or dehydration can result if internal stability is not maintained.
Lesson Info Launch GizmoDrug Dosage
5 Minute Preview
A drug prescription must be carefully planned to maximize benefit while avoiding an overdose. In this Gizmo, you can give a patient one or more pills and monitor the levels of medication in the body through time. Based on the reaction of the patient, determine the ideal levels of medication. Create a dosage schedule so these levels are maintained through time. Four types of pills, each with a different release pattern and target organ, are available for use.
Lesson Info Launch GizmoOrbital Motion - Kepler's Laws
5 Minute Preview
Learn Kepler's three laws of planetary motion by examining the orbit of a planet around a star. The initial position, velocity, and mass of the planet can be varied as well as the mass of the star. The foci and centers of orbits can be displayed and compared to the location of the star. The area swept out by the planet in a given time period can be measured, and data on orbital radii and periods can be plotted in several ways.
Lesson Info Launch GizmoGravity Pitch
5 Minute Preview
Imagine a gigantic pitcher standing on Earth, ready to hurl a huge baseball. What will happen as the ball is thrown harder and harder? Find out with the Gravity Pitch Gizmo. Observe the path of the ball when it is thrown at different velocities. Throw the ball on different planets to see how each planet's gravity affects the ball.
Lesson Info Launch GizmoBeat the Heat: Tackling Urban Heat Islands Using the Science of Energy
- Stem Case
Video Preview
Lake City's latest heat wave has more people in the hospital than ever before. Juan, a local student admitted to the hospital, lives in one of the hottest neighborhoods in the city. Students are hired as the city's Chief Heat Officer to investigate and solve the problem. As the Chief Heat Officer, students look at land uses, surface air temperatures, and building materials across Lake City. Students will develop a system model to test several design solutions and give the mayor a proposal to beat the heat.
Lesson InfoCalorimetry Lab
5 Minute Preview
Investigate how calorimetry can be used to find relative specific heat values when different substances are mixed with water. Modify initial mass and temperature values to see effects on the system. One or any combination of the substances can be mixed with water. A dynamic graph (temperature vs. time) shows temperatures of the individual substances after mixing.
Lesson Info Launch GizmoReaction Time 2 (Graphs and Statistics)
5 Minute Preview
Test your reaction time by catching a falling ruler or clicking a target. Create a data set of experiment results, and calculate the range, mode, median, and mean of your data. Data can be displayed on a list, table, bar graph or dot plot. The Reaction Time 2 Student Exploration focuses on mean.
Lesson Info Launch GizmoReaction Time 1 (Graphs and Statistics)
5 Minute Preview
Test your reaction time by catching a falling ruler or clicking a target. Create a data set of experiment results, and calculate the range, mode, median, and mean of your data. Data can be displayed on a list, table, bar graph or dot plot. The Reaction Time 1 Student Exploration focuses on range, mode, and median.
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 GizmoMeiosis
- Free!
- New!
FREE with no time limit!
5 Minute Preview
Explore how sex cells are produced by the process of meiosis. Compare meiosis in male and female germ cells, and use crossovers to increase the number of possible gamete genotypes. Using meiosis and crossovers, create "designer" fruit fly offspring with desired trait combinations.
Lesson Info Launch GizmoCladograms
- New!
5 Minute Preview
Based on the similarities and differences between different organisms, create branching diagrams called cladograms to show how they are related. Use both morphological data (physical traits) and molecular data to create the simplest and most likely cladograms. Five different sets of organisms are available.
Lesson Info Launch GizmoDye Elimination
5 Minute Preview
When a foreign substance such as a drug is ingested, it often remains in the bloodstream for a long time. This Gizmo models the elimination of substances from the bloodstream using water and dye. Add dye to a container of water, and then add beakers of pure water while removing beakers of dyed water. The amount of dye remaining is recorded after each cycle. The volumes of all containers can be adjusted, as well as the amount of dye used. This provides a good example of exponential decay.
Lesson Info Launch GizmoSound Beats and Sine Waves
5 Minute Preview
Listen to and see interference patterns produced by sound waves with similar frequencies. Test your ability to distinguish and match sounds as musicians do when they tune their instruments. Calculate the number of "sound beats" you will hear based on the frequency of each sound. [Note: Headphones are recommended for this Gizmo.]
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 InfoCrumple Zones
- Free!
- New!
FREE with no time limit!
5 Minute Preview
Design a car to protect a test dummy in a collision. Adjust the length and stiffness of the crumple zone and the rigidity of the safety cell to determine how the car will deform during the crash. Add seat belts and/or airbags to prevent the dummy from hitting the steering wheel. Three different body types (sedan, SUV, and subcompact) are available and a wide range of crash speeds can be used.
Lesson Info Launch GizmoProtein Synthesis
- Stem Case
Video Preview
As a pediatrician, students learn about genes and protein synthesis to try to help a baby girl named Lucy who has an immunodeficiency disease.
Lesson InfoBeam to Moon (Ratios and Proportions)
- Free!
FREE with no time limit!
5 Minute Preview
Apply ratios and proportions to find the weight of a person on the moon (or on another planet). Weigh an object on Earth and on the moon and weigh the person on Earth. Then set up and solve the proportion of the Earth weights to the moon weights.
Lesson Info Launch GizmoCrumple Zones
- Free!
- New!
FREE with no time limit!
5 Minute Preview
Design a car to protect a test dummy in a collision. Adjust the length and stiffness of the crumple zone and the rigidity of the safety cell to determine how the car will deform during the crash. Add seat belts and/or airbags to prevent the dummy from hitting the steering wheel. Three different body types (sedan, SUV, and subcompact) are available and a wide range of crash speeds can be used.
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 InfoMeiosis
- Free!
- New!
FREE with no time limit!
5 Minute Preview
Explore how sex cells are produced by the process of meiosis. Compare meiosis in male and female germ cells, and use crossovers to increase the number of possible gamete genotypes. Using meiosis and crossovers, create "designer" fruit fly offspring with desired trait combinations.
Lesson Info Launch GizmoSound Off, Please!: Designing Solutions to Reduce Noise Pollution
- Stem Case
Video Preview
As an acoustic engineer, students will work with an urban planner to learn how noise pollution impacts a community. Students will develop a system model to test design solutions. Wave properties of sound and how sound interacts with different surfaces will be explored and used as evidence to reduce noise pollution.
Lesson InfoBeat the Heat: Tackling Urban Heat Islands Using the Science of Energy
- Stem Case
Video Preview
Lake City's latest heat wave has more people in the hospital than ever before. Juan, a local student admitted to the hospital, lives in one of the hottest neighborhoods in the city. Students are hired as the city's Chief Heat Officer to investigate and solve the problem. As the Chief Heat Officer, students look at land uses, surface air temperatures, and building materials across Lake City. Students will develop a system model to test several design solutions and give the mayor a proposal to beat the heat.
Lesson InfoSmelling 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 InfoProtein Synthesis
- Stem Case
Video Preview
As a pediatrician, students learn about genes and protein synthesis to try to help a baby girl named Lucy who has an immunodeficiency disease.
Lesson InfoFind Your Solution
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