PPT
Curated OER

Chalkboard Challenge: Fifth Grade Math Review

For Teachers 4th - 5th
This PowerPoint addresses fifth grade math concepts, focusing mostly on geometry. The interactive math review game is in a "Jeopardy" style format and enables students to revisit the topics in geometry such as polygons, quadrilaterals...
PPT
Sophia Learning

Sophia: Using Triangles to Find the Sum of Interior Angles: Lesson 1

For Students 9th - 10th
This lesson demonstrates how to use triangles to determine the sum of the interior angles of a polygon. It is 1 of 5 in the series titled "Using Triangles to Find the Sum of Interior Angles."