Area of a Triangle: Discovering the Formula
My area and perimeter unit is seriously one of my favorite things to teach in fifth! I love the formulas, the real life math experiences, and the hands on learning that can happen. This week, I did a simple, yet totally powerful demonstration to help my students discover, and most of all remember, the formula for the area of a triangle. I gave each student a 5 inch by 5 inch square. We used our rulers to measure five rows and five columns to show the area of our square. Last year, I used a 4 inch by 4 inch…
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