I created four worksheets of sorts, each one consisting of a title and images of a dozen circles. Each circle is divided pizza-like into slices, as in the example above. The four titles: Angles, Fractions, Time, and 100. (The latter, of course, suitable to discuss percents, decimals, and money.)
Some interesting curriculum could be developed using these images. The sheets can be used one at a time, or probably better for some topics, in pairs. Or as a whole set.
Here are some notes on using two worksheets for elementary school lessons on time and money.
If I do more with the worksheets, I'll post it here and announce it on my blog.
If you use them, send me your creations!
Here's the GeoGebra sliced-circle maker I used. Create your own worksheets, and send me a copy!
Download the GeoGebra file