Curated OER
Scalene Triangles
Fifth graders identify and classify scalene, equilateral, and isosceles triangles. In this triangle instructional activity, 5th graders define the different attributes of 3 types of triangles and sort them by descriptions and...
Curated OER
Exploring Angle Pair Relationships
Young scholars investigate the relationship between angles of triangles. For this geometry lesson, students identify properties of right and non-right triangles. They differentiate between vertical and supplementary angles.