National Council of Teachers of Mathematics
The Math Forum: Fermi Questions
This tutorial from the Math Forum provides the approach to problem solving made famous by Enrico Fermi. Fermi, a brilliant Italian physicist, used estimation frequently in problem-solving.
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.
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...
Louisiana Department of Education
Louisiana Doe: Louisiana Believes: Eureka Math Parent Guide: Problem Solving With the Coordinate Plane
A guide to support parents as they work with their students in problem solving with the coordinate plane.
E-learning for Kids
E Learning for Kids: Math: Treasure Island: Groups
Students will play interactive games to explore grouping, estimating, and counting.
AAA Math
Aaa Math: Estimation Rounding
This site explains how to round whole numbers. Gives problems and games to practice this skill.
AAA Math
Aaa Math: Estimating a Sum by Rounding
This site explains how to estimate sums of whole numbers. Gives practice and games to practice this skill.
AAA Math
Aaa Math: Estimating a Difference
This lesson explains how to estimate differences between whole numbers. Gives practice and games to practice this skill in a helpful and fun way.
AAA Math
Aaa Math: Rounding Numbers to the Nearest Ten
This site explains how to round whole numbers to the nearest ten. The information on the site gives exercise problems and games to practice this skill in a fun and helpful way.
AAA Math
Aaa Math: Round to Nearest Thousand
This site explains how to round whole numbers to the nearest thousand. Gives practice and games to master this skill.
AAA Math
Aaa Math: Round to Nearest Ten Thousand
This site explains how to round whole numbers to the nearest ten thousand. Gives exercises and games to practice this skill.
AAA Math
Aaa Math: Round to Nearest Hundred Thousand
This site explains how to round whole numbers to the nearest hundred thousand. Gives practice and games to practice this skill which are fun and helpful on the subject.
AAA Math
Aaa Math: Front End Estimation
Front-end estimation is explained and demonstrated with an online game at this AAA Math lesson.
Science and Mathematics Initiative for Learning Enhancement (SMILE)
Smile: Estimation Contest
A lesson plan that teaches the power of estimation and its uses, a distinction between estimation and guessing.
A to Z Teacher Stuff
A to Z Teacher Stuff: Estimation Station (Lesson Plan)
A hands-on lesson plan for grades K-3 on estimation using goldfish crackers. Lesson used in conjunction with an oceans unit.
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."
ClassFlow
Class Flow: Number Estimate
[Free Registration/Login Required] The teacher will use this lesson plan flipchart to review estimation.
ClassFlow
Class Flow: Estimate Add and Subtract
[Free Registration/Login Required] The teacher will use this lesson plan to teach students how to estimate.
Oswego City School District
Regents Exam Prep Center: Error in Measurement
What are the common errors made when students take measurements and how can they be avoided? A good deal of vocabulary associated with measurement errors is explained. Tips are provided for the student and the teacher in hopes of...
National Council of Teachers of Mathematics
Nctm: Figure This: Drip Drops
Figure out how much water you waste in a week in this exploration using your problem solving, measurement, and estimation skills. This activity is from the NCTM Math Challenges for Families series.