Sophia Learning
Sophia: Estimating the Area of a Circle: Lesson 3
This lesson explains how triangles and parallelograms can be used to estimate the area of a circle. It is 3 of 4 in the series titled "Estimating the Area of a Circle."
Shodor Education Foundation
Shodor Interactivate: Estimator Quiz
This activity allows the student to practice estimating the results of addition multiplication and percentage problems. The activity has 3 levels of challenge.
Khan Academy
Khan Academy: Round Whole Numbers
Practice rounding 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.
Khan Academy
Khan Academy: Round Whole Numbers Word Problems
Solve word problems by rounding whole numbers. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Sophia Learning
Sophia: Order of Magnitude
This slide show presentation introduces the concept of order-of-magnitude, and how it is used to estimate large values in physics.
PBS
Pbs Kids: Peg + Cat: Games: Bubble Bath
Help Pet and Cat fill the bathtub with water by picking a container and pouring water into the tub. You will have to estimate how many containers it will take to fill the tub with water and then see if you are correct.
Sophia Learning
Sophia: Practice Estimating: Lesson 4
This lesson should provide examples of how to make good estimations. It is 4 of 4 in the series titled "Practice Estimating."
Sophia Learning
Sophia: Practice Estimating: Lesson 1
This lesson should provide examples of how to make good estimations. It is 1 of 4 in the series titled "Practice Estimating."
Khan Academy
Khan Academy: Estimate Mass (Grams and Kilograms)
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.
![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]
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.
BBC
Bb Ci: Review Significant Digits
BBCi presents a test prep review ("revision") section on significant digits and on approximating an answer by rounding in order to work with an easy number. Click on "Test Bite," on the last page to get an interactive quiz.
University of Cambridge
University of Cambridge: Nrich: Games Estimating Angles
Use this game to improve your ability to create an angle with a specific number of degrees. You can set the angles to the size you want on this game. Just follow the instructions below it!
Science and Mathematics Initiative for Learning Enhancement (SMILE)
Smile: Lesson: An Introduction to Estimation and Measurements
Pancakes anyone? Pupils explore estimation and measurement by learning how to make pancakes. A hands-on lesson designed for students in grades 3-5 where pupils are engage in hand-on experiences involving measuring volume, converting...
Hunkins Experiments
Hunkin's Experiments:how to Measure the Height of a Tree
Hunkin's Experiments is a group of simple cartoon illustrations of scientific principles. Some would work well in the classroom, but others have little value beyond entertaining students. All of the projects are easy to do. This part...
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...
Study Pad
Splash Learn: Add Decimals Using Models
[Free Registration/Login Required] This fun decimal addition worksheet introduces students to the world of operations with decimal numbers. Fifth graders use models to visualize the addition of numbers in the tenths and hundredths places...
CK-12 Foundation
Ck 12: Arithmetic: Decimal Subtraction
[Free Registration/Login may be required to access all resource tools.] Subtracting decimals with and without rounding
Soft Schools
Soft Schools: Estimation Word Problem Quiz
This word problem quiz will require you to make estimations based on the given information.
ClassFlow
Class Flow: Estimate Rounding
[Free Registration/Login Required] The teacher will use this lesson plan to review rounding, estimation, and computation.
Shodor Education Foundation
Shodor Interactivate: Comparison Estimator
This activity allows the user to compare to quantities by estimating. Students use three types of estimations: counting, length, and area. An interactive activity and teacher resources are included.
Government of Alberta
Learn Alberta: Math Interactives: Exploring Square Roots (Object Interactive)
Explore a set of perfect squares, as well as their square roots using this highly interactive math resource. In addition, students will get to look at estimates of the square roots of non-perfect squares. Printable activities, solutions,...
University of Illinois
University of Illinois Extension: Plan Your Spending
This site presents the budgeting process through a series of steps. This first page describes the first step, creating a spending plan of estimated expenses. This page also has a link to a downloadable spending plan that requires Acrobat...
Sophia Learning
Sophia: Introduction to Estimating: Lesson 3
This lesson should help a learner understand why estimates are used when making calculations. It is 3 of 4 in the series titled "Introduction to Estimating."
Sophia Learning
Sophia: Introduction to Estimating: Lesson 1
This lesson should help a learner understand why estimates are used when making calculations. It is 1 of 4 in the series titled "Introduction to Estimating."