1. This is Part 3 of 3 (2 hour training session)

2. Observe this 6½ minute video from Youtube. It contains Carl Sagan’s narration of how Eratosthenes measured the circumference of the earth.

3. Please review the lesson below. http://www.ciese.org/curriculum/noonday/ Based on the lesson and the video, Draw a picture of how they might use this experiment in their sixth grade classroom. What type of preparation would they need?

4. By Michael Powell http://www.geogebra.org/en/upload/files/M ichaelPowell/Circumference_Investigation.ht ml

6. by Edward M. Knote High School Math Coach School: Blanche Ely High 1201 NW 6th Avenue Pompano Beach FL 33060 Email Address: Edward.Knote@Browardschools.com Edward.Knote@Browardschools.com http://www.geogebra.org/en/wiki/index.php/User:K note#Area_Dynamic_Work_Sheets

8. Review terms and then practice calculating the circumference and the area of a circle using the promethean board and flip charts. ActivInspire