This Instructional Activity is a part of the Lesson 2, Unit 5, Grade 6. Students work in groups of 2 or 3 to discover the formula that can be used to calculate the area of a right triangle. Each group will need the templates attached to this lesson, glue, a ruler, and scissors. If students are struggling, use some guiding questions: What do you know about the area of a rectangle? How are the area of a triangle and rectangle related? Can you fit the triangle inside the rectangle?