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.

Do your students understand the power of 10? This lesson will allow your students to see the utility of the power of 10 in mathematics and come to a concrete conclusion of how 10 impacts the value of mathematical equations.

Get your students comfortable with discussing multiple strategies to solve subtraction problems with this lesson on two- and three-digit subtraction. It may be taught independently or as support for the lesson Subtraction with Regrouping.

Students will get to explore three-digit numbers through base-ten blocks and written form. Students will get plenty of practice identifying the place values of a number both individually and with the class.

This engaging math lesson combines all of your kid's fall favorites as they learn to represent data using a bar graph.

Use this lesson to introduce composing and decomposing as part of your students’ addition and subtraction toolkits.

In this tactile lesson, students will understand how decimals relate to a whole number by using base 10 blocks in a whole new way!