Station 2. Radians Vs. Radius...

In this station we learned that one standard radian is the equivalent of the radius on the unit circle. We compared the length of the radius with a pipe cleaner to the arch length and marked the end of that pipe cleaner to indicate the terminal or other side of the angle. That angle was the equivalent of one radian. In the end we discovered that 6 radians fit into a circle evenly with a little of a quarter of a radius left over.



http://courseware.cemc.uwaterloo.ca/8/163/assignments/91


http://zonalandeducation.com/mmts/trigonometryRealms/radianDemo1/RadianDemo1.html