Teach your students to find the perimeter of polygons using real world examples. They will make polygon pictures using tangrams and practice finding the perimeters of the polygons in their masterpieces.

Teach your students four simple steps to help them solve multiplication and division word problems with confidence.

Use this lesson to review three-digit addition strategies including base-ten drawings, number lines, and the standard algorithm.

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.