Have you ever wondered where the area formulas for triangles, trapezoids and parallelograms came from? In this activity, I walk you through how to derive these formulas using index cards. The activity is designed to build strong, conceptual understandings while creating a hands-on product that they can keep in their notebooks for years to come!
4th - 12th
Geometry, Other (Math)
FREE
Rated 5 out of 5, based on 2 reviews
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About the store
Experience
I have taught middle and high school math internationally, and in the United States.
Teaching style
I try to make math fun and hands on.
My own education history
B.S. Mathematics
M.A.Ed. Math Education
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