Friday Fave for May 19

The Friday Fave has a soft spot in its heart for fractions. Just because we CAN write things in decimals doesn’t mean we should.

Often, a fraction is the exactly right thing to express the relationship you’re investigating.

Case in point—finding areas of sectors of circles. This week’s Friday Fave is Sector Area, where you’ll have way more success expressing your responses in the form of a fraction. It’ll be more precise, and it’ll generalize better in the end.


And generalizing is what this is all about. Students don’t need a formula for sector area; they can figure this out for themselves. With Sector Area, we provide tools for doing exactly that.

And then while you’re in a circular kind of mood, consider taking these activities for a spin…

Circle Patterns

Polygraph: Circles and Ellipses

Penny Circle