Help your students subtract with confidence by sharing two different strategies. Use this lesson to build on students’ understanding of subtraction and to evaluate this key skill.

Introduce your students to multiplying multi-digit numbers with this lesson that gives them plenty of practice and has them play a game with a partner that makes the lesson fun!

Help your students compare and connect two important multiplication strategies: equal groups and repeated addition. This lesson can stand alone or be used as a pre-lesson for Candy Multiplication.

Motivate your students by engaging them in a competition! In this lesson, your students will review and practice multiplication strategies.

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.