Pennsylvania Department of Education
Comparing Sets
Students count back with cubes to model subtraction problems. In this subtraction lesson plan, students compare sets of problems and record their results in a table.
Pennsylvania Department of Education
Order, Order
Students use pictures to identify items as ordinal numbers. In this ordinal numbers lesson plan, students use the words "before" and "after" to identify the pictures as well.
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Estimating Quotients
This is a question about the best way to estimate the answer to a division problem. The answer offers a basic definition of estimation, along with several methods and the positive and negative aspects of each.
![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.
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.
CK-12 Foundation
Ck 12: Arithmetic: Quotient Estimation With Mixed Numbers/fractions
[Free Registration/Login may be required to access all resource tools.] In this lesson students estimate quotients of fractions and mixed numbers using benchmarks and rounding. Students examine guided notes, review guided practice, watch...
Texas Instruments
Texas Instruments: Estimating With Rational Numbers
In this activity, students will round fractions and mixed numbers, and then use their rounding skills to estimate sums, differences, products, and quotients.
CK-12 Foundation
Ck 12: Arithmetic: Small Decimal Rounding to a Leading Digit
[Free Registration/Login may be required to access all resource tools.] In this lesson students use leading digits to estimate decimal products and quotients. Students examine guided notes, review guided practice, watch instructional...
CK-12 Foundation
Ck 12: Arithmetic: Product Estimation With Mixed Numbers/fractions
[Free Registration/Login may be required to access all resource tools.] Estimate products and quotients of fractions and mixed numbers.
CK-12 Foundation
Ck 12: Arithmetic: Estimation of Whole Number
[Free Registration/Login may be required to access all resource tools.] Round and find compatible whole numbers in order to estimate products and quotients.
CK-12 Foundation
Ck 12: Arithmetic: Estimation to Check Decimal Division
[Free Registration/Login may be required to access all resource tools.] Estimate and confirm decimal quotients by dividing leading digits
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.
Wolfram Research
Wolfram Math World: Relative Error
A brief definition of relative error plus links to pages on absolute error, error propagation, and percentage error.
CK-12 Foundation
Ck 12: Arithmetic: Small Decimal Rounding to a Leading Digit
[Free Registration/Login may be required to access all resource tools.] In this lesson students round small decimals to the place value of the leading digit. Students examine guided notes, review guided practice, watch instructional...