Middle schoolers study the triangle inequality. They will identify, compare, and analyze attributes of two and three-dimensional shapes. Then they develop vocabulary to describe the attributes. They also use manipulatives to analyze the...

Ninth graders design a safe passage through a 2-D obstacle. In this geometric math lesson plan, 9th graders engage in a hands on activity to better understand the concept of geometric and algebraic perpendicularity. Students will work in...