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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.
Populations and Samples
5 Minute Preview
Compare sample distributions drawn from population distributions. Predict characteristics of a population distribution based on a sample distribution and examine how well a small sample...
Lesson Info Launch GizmoFraction Artist 2 (Area Models of Fractions)
5 Minute Preview
Extend understanding of fractions by making modern paintings in the style of Piet Mondrian. Create and analyze paintings with different-sized sections. Compare the sizes of unit fractions....
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 GizmoAdding Fractions (Fraction Tiles)
5 Minute Preview
Add fractions with the help of the Fractionator, a fraction-tile-making machine in the Gizmo. Model sums by placing the tiles on side-by-side number lines. Explore the usefulness of common...
Lesson Info Launch GizmoFactor Trees (Factoring Numbers)
5 Minute Preview
The Factor Trees Gizmo has two modes. In Factor mode, you can create factor trees to factor composite numbers into primes. In Build mode, you can build numbers by multiplying primes...
Lesson Info Launch GizmoFraction Artist 1 (Area Models of Fractions)
5 Minute Preview
Develop understanding of fractions by making modern paintings. Find different ways to divide a canvas into equal-sized sections. Make paintings to represent simple fractions and to find...
Lesson Info Launch GizmoPolling: City
5 Minute Preview
Poll residents in a large city to determine their response to a yes-or-no question. Estimate the actual percentage of yes votes in the whole city. Examine the results of many polls to help...
Lesson Info Launch GizmoPattern Finder
5 Minute Preview
Observe frogs jumping around on colored lily pads. Find, test, and reason about patterns you see in their jumping.
Lesson Info Launch GizmoNo Alien Left Behind (Division with Remainders)
5 Minute Preview
The alien school children from the planet Zigmo travel to distant planets on a field trip. The goal is to select a bus size so that all buses are full and no aliens are left behind. This...
Lesson Info Launch GizmoModeling Fractions (Area Models)
- Free!
FREE with no time limit!
5 Minute Preview
Model and compare fractions using area models. Set the denominators with the arrow buttons, and then set the numerators with the arrow buttons or by clicking in the models. Compare...
Lesson Info Launch GizmoModeling Decimals (Area and Grid Models)
5 Minute Preview
Model and compare decimals using area models. Set the number of sections in each model to 1, 10, or 100, and then click in the models to shade sections. Compare decimals visually and on a...
Lesson Info Launch GizmoFraction, Decimal, Percent (Area and Grid Models)
5 Minute Preview
Model and compare fractions, decimals, and percents using area models. Each area model can have 10 or 100 sections and can be set to display a fraction, decimal, or percent. Click inside...
Lesson Info Launch GizmoFido's Flower Bed (Perimeter and Area)
5 Minute Preview
Construct models of gardens on a grid using squares of sod. Fence the gardens to find and compare perimeters. Work with pre-built gardens made of 36 squares each to compare perimeters of...
Lesson Info Launch GizmoEquivalent Fractions (Fraction Tiles)
5 Minute Preview
Explore fractions using the Fractionator, the machine that makes fraction tiles. Compare fractions and find equivalent fractions by arranging the tiles on two horizontal rows. Explore...
Lesson Info Launch GizmoTarget Sum Card Game (Multi-digit Addition)
5 Minute Preview
Play an addition card game! The goal is to create a sum that is as close as possible to the target sum. Students will deepen their understanding of place value as they get better at playing...
Lesson Info Launch GizmoRounding Whole Numbers (Number Line)
5 Minute Preview
Place points on a number line. Round these values to the nearest ten or hundred. Visualize rounding by showing the number line as a hill or series of hills. These hills cause the points to...
Lesson Info Launch GizmoFunction Machines 1 (Functions and Tables)
5 Minute Preview
Drop a number into a function machine, and see what number comes out! You can use one of the six pre-set function machines, or program your own function rule into one of the blank machines....
Lesson Info Launch GizmoFractions Greater than One (Fraction Tiles)
5 Minute Preview
Explore fractions greater than one with the Fractionator, a fraction-tile-making machine in the Gizmo. Create sums of fraction tiles on two number lines. Sums greater than one are shown as...
Lesson Info Launch GizmoFraction Garden (Comparing Fractions)
5 Minute Preview
Plant flowers in two gardens to help develop fraction sense. The two gardens act as number lines, from 0 to 1. Use the flowers in the gardens to compare fractions and to explore equivalent...
Lesson Info Launch GizmoToy Factory (Set Models of Fractions)
5 Minute Preview
Create a set of stuffed animals: monkeys, giraffes, and rabbits. Toys can be painted red, green, or blue. Describe the makeup of the set (animals or colors) with fractions. Arrange the toys...
Lesson Info Launch GizmoModeling Whole Numbers and Decimals (Base-10 Blocks)
5 Minute Preview
Model numbers with base-10 blocks. Drag flats, rods, and individual cubes onto a mat to model a number. Blocks can be exchanged from one area of the mat to the other. Four sets of blocks...
Lesson Info Launch GizmoCritter Count (Modeling Multiplication)
5 Minute Preview
Use groups of critters on leaves to model multiplication as repeated addition. Change the expression to change the number of groups or the number of critters per group. Display the...
Lesson Info Launch GizmoChocomatic (Multiplication, Arrays, and Area)
- Free!
FREE with no time limit!
5 Minute Preview
Use the Chocomatic to design candy bars made out of chocolate squares. Use multiplication to find the number of squares in each chocolate bar. Build collections of chocolate bars that all...
Lesson Info Launch GizmoQuilting Bee (Symmetry)
5 Minute Preview
Participate in an old-fashioned quilting bee and create a colorful, symmetrical quilt. Quilts can be created with a vertical, horizontal, or diagonal line of symmetry. Quilts can be folded...
Lesson Info Launch GizmoCargo Captain (Multi-digit Subtraction)
5 Minute Preview
You are the captain of an interplanetary cargo ship, delivering important supplies to the outer planets. The cargo can be stored in barrels, crates, and holds. (There are 10 barrels in a...
Lesson Info Launch GizmoAdding Whole Numbers and Decimals (Base-10 Blocks)
- Free!
FREE with no time limit!
5 Minute Preview
Use base-10 blocks to model two numbers. Then combine the blocks to model the sum. Blocks of equal value can be exchanged from one area of the mat to the other to help understand carrying...
Lesson Info Launch GizmoMultiplying Decimals (Area Model)
5 Minute Preview
Model the product of two decimals by finding the area of a rectangle. Estimate the area of the rectangle first. Then break the rectangle into several pieces and find the area of each piece...
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 GizmoSubtracting Whole Numbers and Decimals (Base-10 Blocks)
5 Minute Preview
Use base-10 blocks to model a starting number. Then subtract blocks from this number by dragging them into a subtraction bin. Blocks of equal value can be exchanged from one section of the...
Lesson Info Launch GizmoBalancing Blocks (Volume)
5 Minute Preview
This Gizmo provides you with two challenges. First, use blocks to build a figure with a given volume. Then, try to balance the blocks on a platform that sits on the tip of a cone. The...
Lesson Info Launch GizmoPattern Flip (Patterns)
5 Minute Preview
In the Pattern Flip carnival game, you are shown a pattern of cards. The first cards are face-up so you can see the pattern, and the rest are face-down. Can you guess which animals are on...
Lesson Info Launch GizmoFunction Machines 2 (Functions, Tables, and Graphs)
5 Minute Preview
Drop a number into a function machine, and see what number comes out! You can use one of the six pre-set function machines, or program your own function rule into one of the blank machines....
Lesson Info Launch GizmoFunction Machines 3 (Functions and Problem Solving)
5 Minute Preview
Drop a number into a function machine, and see what number comes out! You can use one of the six pre-set function machines, or program your own function rule into one of the blank machines....
Lesson Info Launch GizmoGraphing Skills
5 Minute Preview
Create a graph (bar graph, line graph, pie chart, or scatter plot) based on a given data set. Title the graph, label the axes, and choose a scale. Adjust the graph to fit the data, and then...
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 GizmoSpin the Big Wheel! (Probability)
5 Minute Preview
Step right up! Spin the big wheel! Each spin can result in no prize, a small prize, or a big prize. The wheel can be spun by 1, 10, or 100 players. Results are recorded on a frequency table...
Lesson Info Launch GizmoElevator Operator (Line Graphs)
5 Minute Preview
Operate an elevator in an old apartment building. Pick up and drop off residents where they want to go. A line graph shows where the elevator traveled over time. Operate the elevator either...
Lesson Info Launch GizmoMovie Reviewer (Mean and Median)
5 Minute Preview
Movie reviewers rate movies on a scale of 0 to 10. Each movie comes with a set of reviews that can be changed by the user. The mean of a data set can be explored using a see-saw balance...
Lesson Info Launch GizmoCity Tour (Coordinates)
- Free!
FREE with no time limit!
5 Minute Preview
Go sightseeing in fictional cities all over the world. Learn about coordinates on a graph by navigating around these cities on a grid-like city map. Some landmarks are shown on the map. For...
Lesson Info Launch GizmoCannonball 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 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 GizmoRock Art (Transformations)
5 Minute Preview
Create your own rock art with ancient symbols. Each symbol can be translated, rotated, and reflected. After exploring each type of transformation, see if you can use them to match ancient...
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 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 GizmoLucky Duck (Expected Value)
- New!
5 Minute Preview
Pick a duck, win a prize! Help Arnie the carnie design his game so that he makes money (or at least breaks even). How many ducks of each type should there be? What are the prizes worth? How...
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 GizmoWater Crisis
- 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...
Lesson InfoUsing Algebraic Expressions
5 Minute Preview
Translate algebraic expressions into English phrases, and translate English phrases into algebraic expressions. Read the expression or phrase and select word tiles or symbol tiles to form...
Lesson Info Launch GizmoModeling Fractions (Area Models)
- Free!
FREE with no time limit!
5 Minute Preview
Model and compare fractions using area models. Set the denominators with the arrow buttons, and then set the numerators with the arrow buttons or by clicking in the models. Compare...
Lesson Info Launch GizmoChocomatic (Multiplication, Arrays, and Area)
- Free!
FREE with no time limit!
5 Minute Preview
Use the Chocomatic to design candy bars made out of chocolate squares. Use multiplication to find the number of squares in each chocolate bar. Build collections of chocolate bars that all...
Lesson Info Launch GizmoAdding Whole Numbers and Decimals (Base-10 Blocks)
- Free!
FREE with no time limit!
5 Minute Preview
Use base-10 blocks to model two numbers. Then combine the blocks to model the sum. Blocks of equal value can be exchanged from one area of the mat to the other to help understand carrying...
Lesson Info Launch GizmoCity Tour (Coordinates)
- Free!
FREE with no time limit!
5 Minute Preview
Go sightseeing in fictional cities all over the world. Learn about coordinates on a graph by navigating around these cities on a grid-like city map. Some landmarks are shown on the map. For...
Lesson Info Launch GizmoWater Crisis: Stoichiometry
- 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...
Lesson InfoPopulations and Samples
5 Minute Preview
Compare sample distributions drawn from population distributions. Predict characteristics of a population distribution based on a sample distribution and examine how well a small sample represents a given population.
Lesson Info Launch GizmoFraction Artist 2 (Area Models of Fractions)
5 Minute Preview
Extend understanding of fractions by making modern paintings in the style of Piet Mondrian. Create and analyze paintings with different-sized sections. Compare the sizes of unit fractions. Find creative ways to color one-half of a painting. This can be a nice introduction to adding fractions with unlike denominators.
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 GizmoAdding Fractions (Fraction Tiles)
5 Minute Preview
Add fractions with the help of the Fractionator, a fraction-tile-making machine in the Gizmo. Model sums by placing the tiles on side-by-side number lines. Explore the usefulness of common denominators in adding. Express sums as improper fractions or mixed numbers.
Lesson Info Launch GizmoFactor Trees (Factoring Numbers)
5 Minute Preview
The Factor Trees Gizmo has two modes. In Factor mode, you can create factor trees to factor composite numbers into primes. In Build mode, you can build numbers by multiplying primes together. Can you build all composite numbers up to 50? Any whole composite number up to 999 can be factored or built with the Gizmo.
Lesson Info Launch GizmoFraction Artist 1 (Area Models of Fractions)
5 Minute Preview
Develop understanding of fractions by making modern paintings. Find different ways to divide a canvas into equal-sized sections. Make paintings to represent simple fractions and to find fractions that are equivalent to one-half.
Lesson Info Launch GizmoPolling: City
5 Minute Preview
Poll residents in a large city to determine their response to a yes-or-no question. Estimate the actual percentage of yes votes in the whole city. Examine the results of many polls to help assess how reliable the results from a single poll are. See how the normal curve approximates a binomial distribution for large enough polls.
Lesson Info Launch GizmoPattern Finder
5 Minute Preview
Observe frogs jumping around on colored lily pads. Find, test, and reason about patterns you see in their jumping.
Lesson Info Launch GizmoNo Alien Left Behind (Division with Remainders)
5 Minute Preview
The alien school children from the planet Zigmo travel to distant planets on a field trip. The goal is to select a bus size so that all buses are full and no aliens are left behind. This is a nice illustration of division with remainders.
Lesson Info Launch GizmoModeling Fractions (Area Models)
- Free!
FREE with no time limit!
5 Minute Preview
Model and compare fractions using area models. Set the denominators with the arrow buttons, and then set the numerators with the arrow buttons or by clicking in the models. Compare fractions visually, on a number line, or numerically using the least common denominator.
Lesson Info Launch GizmoModeling Decimals (Area and Grid Models)
5 Minute Preview
Model and compare decimals using area models. Set the number of sections in each model to 1, 10, or 100, and then click in the models to shade sections. Compare decimals visually and on a number line.
Lesson Info Launch GizmoFraction, Decimal, Percent (Area and Grid Models)
5 Minute Preview
Model and compare fractions, decimals, and percents using area models. Each area model can have 10 or 100 sections and can be set to display a fraction, decimal, or percent. Click inside the area models to shade them. Compare the numbers visually or on a number line.
Lesson Info Launch GizmoFido's Flower Bed (Perimeter and Area)
5 Minute Preview
Construct models of gardens on a grid using squares of sod. Fence the gardens to find and compare perimeters. Work with pre-built gardens made of 36 squares each to compare perimeters of shapes with equal areas.
Lesson Info Launch GizmoEquivalent Fractions (Fraction Tiles)
5 Minute Preview
Explore fractions using the Fractionator, the machine that makes fraction tiles. Compare fractions and find equivalent fractions by arranging the tiles on two horizontal rows. Explore simplifying fractions. Add fractions and express sums as improper fractions or mixed numbers.
Lesson Info Launch GizmoTarget Sum Card Game (Multi-digit Addition)
5 Minute Preview
Play an addition card game! The goal is to create a sum that is as close as possible to the target sum. Students will deepen their understanding of place value as they get better at playing the game. Many game options allow students to vary the game for more practice. The game can be played with one or two players.
Lesson Info Launch GizmoRounding Whole Numbers (Number Line)
5 Minute Preview
Place points on a number line. Round these values to the nearest ten or hundred. Visualize rounding by showing the number line as a hill or series of hills. These hills cause the points to roll to the nearest valley (nearest multiple of ten or one hundred).
Lesson Info Launch GizmoFunction Machines 1 (Functions and Tables)
5 Minute Preview
Drop a number into a function machine, and see what number comes out! You can use one of the six pre-set function machines, or program your own function rule into one of the blank machines. Stack up to three function machines together. Input and output can be recorded in a table and on a graph.
Lesson Info Launch GizmoFractions Greater than One (Fraction Tiles)
5 Minute Preview
Explore fractions greater than one with the Fractionator, a fraction-tile-making machine in the Gizmo. Create sums of fraction tiles on two number lines. Sums greater than one are shown as improper fractions on the top number line, and as mixed numbers on the bottom number line.
Lesson Info Launch GizmoFraction Garden (Comparing Fractions)
5 Minute Preview
Plant flowers in two gardens to help develop fraction sense. The two gardens act as number lines, from 0 to 1. Use the flowers in the gardens to compare fractions and to explore equivalent fractions. Chalk marks can be drawn to divide the garden into equal sections.
Lesson Info Launch GizmoToy Factory (Set Models of Fractions)
5 Minute Preview
Create a set of stuffed animals: monkeys, giraffes, and rabbits. Toys can be painted red, green, or blue. Describe the makeup of the set (animals or colors) with fractions. Arrange the toys into groups to simplify the fractions.
Lesson Info Launch GizmoModeling Whole Numbers and Decimals (Base-10 Blocks)
5 Minute Preview
Model numbers with base-10 blocks. Drag flats, rods, and individual cubes onto a mat to model a number. Blocks can be exchanged from one area of the mat to the other. Four sets of blocks are available to model a variety of whole numbers and decimals.
Lesson Info Launch GizmoCritter Count (Modeling Multiplication)
5 Minute Preview
Use groups of critters on leaves to model multiplication as repeated addition. Change the expression to change the number of groups or the number of critters per group. Display the critters either on leaves or as a rectangular array.
Lesson Info Launch GizmoChocomatic (Multiplication, Arrays, and Area)
- Free!
FREE with no time limit!
5 Minute Preview
Use the Chocomatic to design candy bars made out of chocolate squares. Use multiplication to find the number of squares in each chocolate bar. Build collections of chocolate bars that all have the same number of squares. Solve multiplication problems by joining two smaller chocolate bars into a large bar.
Lesson Info Launch GizmoQuilting Bee (Symmetry)
5 Minute Preview
Participate in an old-fashioned quilting bee and create a colorful, symmetrical quilt. Quilts can be created with a vertical, horizontal, or diagonal line of symmetry. Quilts can be folded to look for reflections, or rotated to test for rotational symmetry.
Lesson Info Launch GizmoCargo Captain (Multi-digit Subtraction)
5 Minute Preview
You are the captain of an interplanetary cargo ship, delivering important supplies to the outer planets. The cargo can be stored in barrels, crates, and holds. (There are 10 barrels in a crate, and 10 crates in a hold.) Model multi-digit subtraction by unloading cargo on each planet.
Lesson Info Launch GizmoAdding Whole Numbers and Decimals (Base-10 Blocks)
- Free!
FREE with no time limit!
5 Minute Preview
Use base-10 blocks to model two numbers. Then combine the blocks to model the sum. Blocks of equal value can be exchanged from one area of the mat to the other to help understand carrying when adding. Four sets of blocks are available to model different place values.
Lesson Info Launch GizmoMultiplying Decimals (Area Model)
5 Minute Preview
Model the product of two decimals by finding the area of a rectangle. Estimate the area of the rectangle first. Then break the rectangle into several pieces and find the area of each piece (partial product). Add these areas together to find the whole area (product).
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 GizmoSubtracting Whole Numbers and Decimals (Base-10 Blocks)
5 Minute Preview
Use base-10 blocks to model a starting number. Then subtract blocks from this number by dragging them into a subtraction bin. Blocks of equal value can be exchanged from one section of the mat to the other to help understand regrouping and borrowing. Four sets of blocks are available to model different place values.
Lesson Info Launch GizmoBalancing Blocks (Volume)
5 Minute Preview
This Gizmo provides you with two challenges. First, use blocks to build a figure with a given volume. Then, try to balance the blocks on a platform that sits on the tip of a cone. The dimensions of the platform can be adjusted, and blocks can be added or deleted by clicking on the model.
Lesson Info Launch GizmoPattern Flip (Patterns)
5 Minute Preview
In the Pattern Flip carnival game, you are shown a pattern of cards. The first cards are face-up so you can see the pattern, and the rest are face-down. Can you guess which animals are on the face-down cards? Use one of the preset patterns, or make your own custom pattern. Good luck!
Lesson Info Launch GizmoFunction Machines 2 (Functions, Tables, and Graphs)
5 Minute Preview
Drop a number into a function machine, and see what number comes out! You can use one of the six pre-set function machines, or program your own function rule into one of the blank machines. Stack up to three function machines together. Input and output can be recorded in a table and on a graph.
Lesson Info Launch GizmoFunction Machines 3 (Functions and Problem Solving)
5 Minute Preview
Drop a number into a function machine, and see what number comes out! You can use one of the six pre-set function machines, or program your own function rule into one of the blank machines. Stack up to three function machines together. Input and output can be recorded in a table and on a graph.
Lesson Info Launch GizmoGraphing Skills
5 Minute Preview
Create a graph (bar graph, line graph, pie chart, or scatter plot) based on a given data set. Title the graph, label the axes, and choose a scale. Adjust the graph to fit the data, and then check your accuracy. The Gizmo can also be used to create a data table based on a given graph.
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 GizmoSpin the Big Wheel! (Probability)
5 Minute Preview
Step right up! Spin the big wheel! Each spin can result in no prize, a small prize, or a big prize. The wheel can be spun by 1, 10, or 100 players. Results are recorded on a frequency table or a circle graph. You can also design your own wheel and a sign that describes the probabilities for your wheel.
Lesson Info Launch GizmoElevator Operator (Line Graphs)
5 Minute Preview
Operate an elevator in an old apartment building. Pick up and drop off residents where they want to go. A line graph shows where the elevator traveled over time. Operate the elevator either by using the standard up and down controls, or by building a graph to program where you want it to go.
Lesson Info Launch GizmoMovie Reviewer (Mean and Median)
5 Minute Preview
Movie reviewers rate movies on a scale of 0 to 10. Each movie comes with a set of reviews that can be changed by the user. The mean of a data set can be explored using a see-saw balance model. Students can also find the median, mode, and range of the data set.
Lesson Info Launch GizmoCity Tour (Coordinates)
- Free!
FREE with no time limit!
5 Minute Preview
Go sightseeing in fictional cities all over the world. Learn about coordinates on a graph by navigating around these cities on a grid-like city map. Some landmarks are shown on the map. For others, you are only given the coordinates. Can you find all of them?
Lesson Info Launch GizmoCannonball 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 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 GizmoRock Art (Transformations)
5 Minute Preview
Create your own rock art with ancient symbols. Each symbol can be translated, rotated, and reflected. After exploring each type of transformation, see if you can use them to match ancient rock paintings.
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 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 GizmoLucky Duck (Expected Value)
- New!
5 Minute Preview
Pick a duck, win a prize! Help Arnie the carnie design his game so that he makes money (or at least breaks even). How many ducks of each type should there be? What are the prizes worth? How much should he charge to play? Lucky Duck is a fun way to learn about probabilities and expected value.
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 GizmoWater Crisis
- 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 an environmental chemist to investigate the source of legionella and use stoichiometry to decontaminate the water supply and remediate the disease outbreak.
Lesson InfoUsing Algebraic Expressions
5 Minute Preview
Translate algebraic expressions into English phrases, and translate English phrases into algebraic expressions. Read the expression or phrase and select word tiles or symbol tiles to form the corresponding phrase or expression.
Lesson Info Launch GizmoModeling Fractions (Area Models)
- Free!
FREE with no time limit!
5 Minute Preview
Model and compare fractions using area models. Set the denominators with the arrow buttons, and then set the numerators with the arrow buttons or by clicking in the models. Compare fractions visually, on a number line, or numerically using the least common denominator.
Lesson Info Launch GizmoChocomatic (Multiplication, Arrays, and Area)
- Free!
FREE with no time limit!
5 Minute Preview
Use the Chocomatic to design candy bars made out of chocolate squares. Use multiplication to find the number of squares in each chocolate bar. Build collections of chocolate bars that all have the same number of squares. Solve multiplication problems by joining two smaller chocolate bars into a large bar.
Lesson Info Launch GizmoAdding Whole Numbers and Decimals (Base-10 Blocks)
- Free!
FREE with no time limit!
5 Minute Preview
Use base-10 blocks to model two numbers. Then combine the blocks to model the sum. Blocks of equal value can be exchanged from one area of the mat to the other to help understand carrying when adding. Four sets of blocks are available to model different place values.
Lesson Info Launch GizmoCity Tour (Coordinates)
- Free!
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5 Minute Preview
Go sightseeing in fictional cities all over the world. Learn about coordinates on a graph by navigating around these cities on a grid-like city map. Some landmarks are shown on the map. For others, you are only given the coordinates. Can you find all of them?
Lesson Info Launch GizmoWater Crisis: Stoichiometry
- Stem Case
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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 an environmental chemist to investigate the source of legionella and use stoichiometry to decontaminate the water supply and remediate the disease outbreak.
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