Curated OER
How Big Is Your Heart?
Students complete a performance about the heart. For this heart lesson plan, students learn about the heart functions and then perform them.
AAA Math
Aaa Math: Estimation
Improve your estimation and rounding skills with these interactive games that are challenging and fun. Excellent skills practice for rounding, estimating sums and differences, and front-end estimation. Links to lesson plans, teacher...
Shodor Education Foundation
Shodor Interactivate: Lesson: Estimation
This lesson plan is designed to help students learn to make estimates. Resources are linked to help support the teacher and offer exploration and practice to students.
National Council of Teachers of Mathematics
Nctm: Figure This: Beating Heart
Do you know how long it takes your heart to beat 100 times? Test your estimation and number sense skills with this problem-solving challenge. A one-page activity taken from the NCTM Math Challenges for Families Collection. Hints and...
ClassFlow
Class Flow: Estimation
[Free Registration/Login Required] After this lesson, students will be able to solve problems using a variety of mental math strategies.
Alabama Learning Exchange
Alex: Estimation Station
During this instructional activity, students will learn the difference between estimation and guessing. Knowing how to estimate is an essential skill that will help students determine approximate totals as well as check the...
E-learning for Kids
E Learning for Kids: Math: Igloo: Addition
It takes a lot of math to build an Igloo. Can you help Kirima? Students will learn to select and apply appropriate mental, written or calculator strategies to solve addition problems.
ClassFlow
Class Flow: Rounding
[Free Registration/Login Required] In this flipchart, students apply estimation strategies to predict or determine the reasonableness of answers in situations involving computation on rational numbers in various forms including whole...
Shodor Education Foundation
Shodor Interactivate: Comparison Estimator
Use this applet to practice your estimating skills comparing length, area, counting or a random sampling of those topics. You can also adjust the difficulty and the precision needed. The applet also lets you know how close you are to the...
Shodor Education Foundation
Shodor Interactivate: Estimator Four
This applet game for two allows you to practice estimating at several different levels of accuracy. You can choose whole number addition, multiplication, percentages or any combination of the three.
Khan Academy
Khan Academy: Estimate to Add and Subtract Multi Digit Whole Numbers
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...
![K 5 Math Teaching Resources: Estimate the Quotient [Pdf] Activity](https://d15y2dacu3jp90.cloudfront.net/images/attachment_defaults/resource/large/FPO-knovation.png "K 5 Math Teaching Resources: Estimate the Quotient [Pdf] Activity")
K-5 Math Teaching Resources
K 5 Math Teaching Resources: Estimate the Quotient [Pdf]
Use strategies to estimate the quotient.
Khan Academy
Khan Academy: Estimating With Multiplying Decimals
Estimating with multiplying decimals. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
PBS
Pbs: Approximating Square Roots of Nonperfect Squares
Visualize a strategy for approximating the square roots of nonperfect squares through modeling. This video focuses on a ratio, the number of extra tiles over the number of tiles for the next square that will give you a fractional...