Finding the Area of Triangles
6th GradeMath36 min
Illustrative Mathematics
Learning Objective
I can calculate the area of triangles using the formula A = 1/2 * b * h.
Lesson Flow
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Guided Notes
Key concepts students will learn:
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The area of a triangle can be found using the formula: Area = base × height ÷ 2.
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When finding area, the units are always expressed as square units, such as square feet or square meters.
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A triangle is exactly half of a rectangle or parallelogram, which is why we divide the base times height by two to find the area of a triangle.
Practice
4 questions • Multiple choice & Short answer
Exit Ticket
“A triangle has a base of 12 cm and a height of 7 cm. What is the area of the triangle? Show your work.”
Teacher Guide
Get the complete package:
- Answer keys for all questions
- Differentiation strategies
- Extension activities
- Printable student handouts
