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Interactive
Curated OER

Which One Is Heavier?

For Students 2nd - 4th
In this which one is heavier learning exercise, students decide between pictures of two object and click on the one that is heavier, with immediate online feedback, for 52 pairs of objects.
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Lesson Plan
Curated OER

Online video games plus curriculum-based math equals an engaging educational tool.

For Teachers 7th
Seventh graders use online math games to practice understanding the skill of estimation and order of operations. In this lesson, 7th graders use the internet to play online games to strengthen their understanding of these skills. 
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Worksheet
Curated OER

Estimating Expenses

For Students 6th - 8th
In this estimation worksheet, students estimate expenses of different items by solving word problems. Students estimate expenses for 5 problems.
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Worksheet
Curated OER

Estimation with Decimals Quiz

For Students 5th - 10th
In this estimation with decimals worksheet, learners complete problems where they estimate all four operations and word problems with decimals. Students complete 12 problems.
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Worksheet
Curated OER

Quick Quiz: Estimating and Rounding

For Students 5th
In this rounding and estimating worksheet, 5th graders solve 8 addition, subtraction, and rounding problems. Problems ask students to solve, round, estimate, or write the words in number form after reading the word form. 
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Worksheet
Curated OER

Estimating Decimals

For Students 6th - 7th
In this estimation worksheet, students learn to estimate with decimal numbers by using rounding or compatible numbers. There are 10 problems.
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Worksheet
Curated OER

Estimate Using Tens

For Students 2nd
In this estimate using tens worksheet, 2nd graders match three sets of toys with 3 jars by estimating using tens and reading the label on the jar.
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Worksheet
Curated OER

Round and Estimate

For Students 3rd - 5th
For this estimation and rounding worksheet, students estimate sums or differences by rounding to the nearest hundred mile, then find the total distance from one given spot to another. 
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Lesson Plan
Curated OER

How Many Pancake Tortoises

For Teachers 3rd
In this mathematics lesson, 3rd graders estimate how many pancake tortoises they think it will take to reach the height of a giraffe.  Students watch a video and take notes before they begin the estimation process
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Worksheet
Curated OER

Guess How Many: Estimation Practice

For Students 1st - 2nd
In this estimation worksheet, students estimate the number of stars in a picture, explain how they estimated and count the actual stars. Students then draw their own picture and have a classmate estimate stars.
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Worksheet
Curated OER

Estimate High and Low: Compatible Numbers

For Students 3rd - 5th
In this estimation worksheet, students read about compatible numbers and complete a chart, estimating quotients and determining if estimations were "over or under." Students then answer questions related to the chart.
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Worksheet
Curated OER

Estimate Distances on a Map

For Students 3rd - 5th
In this estimation worksheet, students estimate the distance on a city map based on the scale given to them. Students answer 4 short answer questions.
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Worksheet
Curated OER

Estimating Products: Which is Closer?

For Students 4th
In this estimating products worksheet, 4th graders are given a target number in ten problems, they first estimate which of two equations will yield a product closer to but less than the other, then they multiply both equations.
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Organizer
Curated OER

Estimating Products with Decimal Movement

For Students 5th
In this estimating products with decimal movement worksheet, 5th graders multiply to complete the table, then answer three questions about the patterns in the movement of the decimal point.
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Lesson Plan
Curated OER

French Fry Run

For Teachers 2nd
Student explore estimation and measurement. In this measurement lesson plan, 2nd graders measure french fries, graph their data, and determine the size of french fries that is the best value. Students practice how to add prices and...
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Lesson Plan
Curated OER

Models and Algorithms to Solve Multiplication Problems

For Teachers 7th - 9th
Students choose the correct strategy to solve multiplication and division. In this algorithm lesson, students use at least two strategies that use properties of operations and estimation. Students also recognize the relationship between...
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Lesson Plan
Curated OER

Amazon Rainforest Conservation, Brazil

For Teachers 2nd - 3rd
Students explore the concept of understanding the effects of disturbances in an environment.  In this life science lesson, students use the game Jenga to help capture the idea of environment disturbances.  Students discuss the effects of...
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Lesson Plan
Curated OER

Estimating Prices

For Teachers 4th - 5th
Students practice making reasonable estimates. In this consumer math, students round purchase prices of items to estimate the total cost. Students practice using metal computations to arrive at estimates.
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Lesson Plan
Curated OER

Estimating Distance and Time

For Teachers 3rd - 5th
Students analyze a Cyberchase video to help them understand how to estimate the time it takes to travel distances. In this time lesson, students use ratiosand repeated addition to calculate how much air the characters in the video need...
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Lesson Plan
Curated OER

Sizing Up Spout

For Teachers 3rd - 5th
Students estimate heights and lengths of objects. In this measurement lesson plan, students estimate the length and height of various objects using non-traditional tools of measurement. This lesson plan also includes a video clip on...
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Lesson Plan
Curated OER

Adjusting the Quotient

For Teachers 5th - 6th
Learners solve division problems. In this division lesson, students review estimating and how to figure out if their estimate is too large or too small. Learners solve division problems and use their estimating skills to adjust the...
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Lesson Plan
Curated OER

Away we Go

For Teachers 5th - 7th
Students work in groups to calculate the costs of a trip to Six Flags amusement park. In this domain and range lesson, students calculate the least and greatest amounts of money needed for tickets, food, souvenirs, and airplane tickets.
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Worksheet
Curated OER

What Can You Do In One Minute?

For Students 1st - 2nd
In this timing worksheet, students discover what tasks can be done in one minute. Students solve 5 problems in which they time themselves for one minute doing different tasks such as: building a cube tower, keeping a ball up in the air,...
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Lesson Plan
Curated OER

Estimating and Counting Money

For Teachers 2nd - 4th
Students explore the concepts of estimating and rounding. In this estimating and rounding lesson, students play a game of tic-tac-toe. Students pick items and must estimate their cost by rounding. Students estimate the costs of pretend...