# Geometry Activities

Download Geometry Activities and Teacher Activity Notes. Access the Fathom files for these activities by selecting File, Open Sample Document, and choosing the relevant file from the folder “Teaching Math with Fathom.” Descriptions of the activities are given below.

**The Circumference Function:**What is the relationship between a circle’s circumference and its diameter? In this activity you’ll discover or rediscover this important relationship.**Area and Perimeter:**How are the area and perimeter of a rectangle related? You probably know the formulas for area and perimeter by heart. But if you look at area and perimeter data for many different rectangles, would you notice any patterns? Youâ€™ll use Fathom to explore this question.

All downloadable resources are © Copyright William Finzer. Used with permission.