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Unit Plan
Khan Academy

Khan Academy: Estimate to Add and Subtract Multi Digit Whole Numbers

For Students 1st - 3rd Standards
Use estimation to find a reasonable solution to multi-digit addition and subtraction problems. Numbers are less than or equal to 1000. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a...
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Activity
K-5 Math Teaching Resources

K 5 Math Teaching Resources: Estimate the Quotient [Pdf]

For Students 3rd - 5th
This activitiy asks students to randomly select a one-digit divisor and a three-digit dividend and estimate the quotient mentally. Students must then explain why they believe their estimate is accurate.
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Lesson Plan
Alabama Learning Exchange

Alex: Are Your Numbers Round?

For Teachers 3rd - 5th
Learners will use a variety of activities and games to learn how to round numbers.This lesson plan was created as a result of the Girls Engaged in Math and Science, GEMS Project funded by the Malone Family Foundation.
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Unknown Type
Math Slice

Math Slice: Rounding: Math Worksheets

For Students 3rd - 7th Standards
This tool allows you to create worksheets where students must round whole numbers or decimal numbers to various place value positions.
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Activity
National Council of Teachers of Mathematics

Nctm: Figure This: What's My Angle?

For Students 3rd - 8th Standards
Do people with big hands have larger angles between their fingers? See if you can find the answer this question when you try this math challenge on estimating and measuring angles. Discover how understanding angles and geometric shapes...
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Whiteboard
ClassFlow

Class Flow: Crct Review Day 6

For Teachers 3rd - 6th
[Free Registration/Login Required] This flipchart is a review for the Georgia CRCT covering fractions and estimating.
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Activity
National Council of Teachers of Mathematics

Nctm: Figure This: Chocolate (Pdf)

For Students 3rd - 8th
Here's a delicious math challenge for chocolate lovers! Use your estimation and measurement skills to discover which irregular shaped, chocolate covered cookie has the largest surface area. A one-page activity from the NCTM Math...
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Unit Plan
Khan Academy

Khan Academy: Estimate Volume (Milliliters and Liters)

For Students 3rd - 5th
Practice estimating the volume of real life objects using milliliters and liters. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
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Activity
Annenberg Foundation

Annenberg Learner: From Corner to Corner

For Students 2nd - 5th Standards
Measure the lengths and diagonals of three squares with a ruler. Look over your measurements and try to come up with a rule of thumb for estimating the length of a diagonal if you know the length of a side.
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Unit Plan
PBS

Pbs: Who Won?: Comparing Decimals to the Thousandths Place

For Students 3rd - 5th
To figure out who won the race you have to compare their times. This interactive exercise focuses on using what you know about ordering decimals, number lines and rounding to the tenths place and then asks you to think about what numbers...
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Lesson Plan
Science and Mathematics Initiative for Learning Enhancement (SMILE)

Smile: Lesson: An Introduction to Estimation and Measurements

For Teachers 3rd - 5th
Pancakes anyone? Students explore estimation and measurement by learning how to make pancakes. A hands-on lesson designed for students in grades 3-5 where students are engage in hand-on experiences involving measuring volume, converting...
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Activity
Science Buddies

Science Buddies: M&m Geometry

For Students 3rd - 5th Standards
Geometry is the study of how to use math to describe and investigate different points, lines and shapes. The way that a shape is described in geometry is with a formula, which is simply a mathematical way to calculate different...
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Unit Plan
Khan Academy

Khan Academy: Estimate Lengths

For Students 1st - 3rd Standards
Sal estimates lengths using units of inches, feet, centimeters, and meters. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video tutorial, or receive hints.
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Website
PBS

Pbs Learning Media: How Many Jelly Beans?

For Students 3rd - 8th
In this video segment from Cyberchase, Inez estimates whether she has enough jelly beans in her large container to decorate all of the cookies in her batch.
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Unit Plan
Khan Academy

Khan Academy: Estimate Mass (Grams and Kilograms)

For Students 2nd - 4th Standards
Practice estimating the mass of real life objects using grams and kilograms. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
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Unit Plan
Khan Academy

Khan Academy: Round Whole Numbers Challenge

For Students 3rd - 5th Standards
More challenging practice problems where you round whole numbers to the nearest hundred or thousand Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
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Activity
University of Cambridge

University of Cambridge: Nrich: Angle A

For Students 3rd - 8th Standards
Sharpen your logic and angle recognition skills by working on this interactive challenge. Solution available.
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Unit Plan
Khan Academy

Khan Academy: Write Whole Numbers in Expanded Form

For Students 3rd - 5th Standards
Practice reading and writing numbers written in expanded form. Example: The expanded form of 376 is 300 + 70 + 6. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
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Unit Plan
Khan Academy

Khan Academy: Place Value When Multiplying and Dividing by 10

For Students 3rd - 5th Standards
Recognize that in a multi-digit whole number, a digit in one place represents ten times what it represents in the place to its right. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video...
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Unknown Type
Khan Academy

Khan Academy: Practice: Estimate Volume (Milliliters and Liters)

For Students 3rd Standards
A practice quiz where students must choose the appropriate metric unit and amount to estimate the volume of each object. Includes hints.

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