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Let's better understand multiplication and division concepts! Use this lesson to help students understand inverse operations between multiplication and division.

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.

Freshen up on your understanding of division word problems with long division and one-digit divisors! Use this lesson to help students identify key division terms and solve word problems.

In this lesson, students will add three-digit numbers using expanded form addition and standard algorithm addition. They'll explain their answers and highlight the steps for each of the 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.

Start your students on subtracting three-digit numbers with this lesson that breaks the problems down by place values!

Help your students make sense of the commutative property of multiplication by relating it to arrangements of cars in parking lots.

Students will "roll" to this quick game and "slap out" multiplication facts to reinforce multiplication skills and beat their own scores!