I created four worksheets of sorts, each one consisting of a short 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 Percents/Money.
Here is my invitation to teachers and students: can you come up with interesting math to do with those worksheets?
For more info, and to download the sheets, go to the Slices page on my Web site.