CDs and Brush Sharpie Markers

Here’s my plan to use up a huge stash of CDs this next school year. I believe there are easy ways to tie this project into Common Core standards, like having first graders divide their circles into halves and quarters, while older students could do some fraction practice.
On a side note, I don’t own stock in Sharpie, I just love the way the Brush markers color, and my students do too. Just so you know.