This is a great, hands-on activity that allows students to discover the relationship between circumference and diameter. There are other activities like this on TPT, but none as detailed and rooted in constructivist learning like this one.
This is a short quiz written in SMART Notebook software for use with SMART Response clickers. It can be used with any of the Response clickers (LE/PE/XE).
If you have SMART Response VE, you can also use this quiz with student laptops, smart phones