Use informal arguments to establish facts about the angle sum and exterior angle of triangles, about the angles created when parallel lines are cut by a transversal, and the angle-angle criterion for similarity of triangles. For example, arrange three copies of the same triangle so that the sum of the three angles appears to form a line, and give an argument in terms of transversals why this is so.

Basic Geometry Lesson Plan: A Tangled Web Puzzle Game

Posted by allisyn on

In this lesson plan adaptable for grades 3 through 8, students use BrainPOP resources (including an interactive game) to learn about basic geometry concepts. Students will explore angles, parallel lin...

Geometry Q and A Lesson Plan: Student-Generated Questions

Posted by on

In this lesson plan, which is adaptable for grades 3-12, students use BrainPOP resources to explore the unifying principles of geometry. Students will identify pertinent questions related to geometry,...

Math Skills Lesson Plan: It’s All Fun and Games

Posted by SM Bruner on

In this math skills lesson plan, which is adaptable for grades 3-12, students work collaboratively to research selected math skills. Students then create, play, and assess a math game that is designed...