Video Description: Learn how Eratosthenes, way back in ancient times, successfully calculated an accurate measurement of Earth’s circumference.
Quick Ideas for Using the Video:
*Topical videos are filmed on location in the classroom/workspace/laboratory, in studio, or a combination of both to explain and/or demonstrate specific concepts, events, topics, or processes.
**The unique Video ID can be used to quickly locate a single video in the ET collection. This search function is designed to let teachers assign students to watch a specific video and have only that video appear as a search result. Just click on Search and choose “By Video ID.” Then type in the Video ID as it appears above. Be sure to include the dash.