Click on the link below to access eTool.
Use this eTool to demonstrate/summarize students findings concerning the relationship between the radius of a circle and radian measurement.
1. Click on the BLUE points (Radians and Radius sliders) and drag horizontally to find the arc length for a particular radius and radian measure.
![](https://media.screensteps.com/image_assets/assets/002/430/331/original/657a1c54-6d1b-4739-a744-5f532e0d52e5.png)