Use this lesson to teach your students how to determine if they should use addition, subtraction, or both operations to solve a word problem by following four simple steps.

Help your students discover patterns when multiplying by five.

Bring on the polygons! Your students will build their understanding of polygons and sort shapes into categories based on their attributes in this lesson.

In math, mistakes are welcome! This lesson helps your students identify and fix errors made while comparing three- to four-digit numbers. Teach the lesson on its own or as support to the lesson Let's Compare Whole Numbers!

Help your students make a connection between numerical expressions and written phrases in word problems.

Share the divvy out method for division and provide a foundation for learning the partial quotients method. This lesson can be used on its own or as support for Using the Partial Quotients Strategy for Division with One-Digit Divisors.