★ A Social Entrepreneurship Project
Math Playground is reimagining how kids meet numbers — through play, curiosity, and a little chaos. No worksheets. No fear. Just the good stuff.
π ∑ ÷ √ ∞Hi, I'm Camilla Shtrom — a high school junior who grew up feeling like I just wasn't a "math person." I'd stare at worksheets and feel my brain shut down. Sound familiar?
That experience sent me on a mission. I realized the problem wasn't me — it was the way math was being taught. Most kids decide they're "bad at math" before they're 10. That's not a math problem — it's a design problem.
Math Playground is my answer: hands-on tools built for kinesthetic learners — kids who need to touch, build, and move to understand. Starting with the Fraction Disk Set, a 3D-printed manipulative that makes fractions feel real, not abstract. Because when math becomes a playground instead of a test, kids start asking why.
Our 3D-printed fraction disk set and how to get your hands on one.
The full 3D-printable design: a base ring + interchangeable wedges for ½, ⅓, ¼, ⅙, and ⅛. Open in Tinkercad to explore or download the STL files.
Sign up and we'll 3D print a fraction disk set for your classroom or kid. Limited run — first come, first served!
Use your fraction disk set alongside these activities. Grab the pieces, build each fraction, and fill in the blanks!
How many pieces of each type does it take to make one whole pie?
| Fraction | Pieces to make a whole |
|---|---|
| ½ | |
| ⅓ | |
| ¼ | |
| ⅙ | |
| ⅛ |
Using the pie tool, build each fraction and sketch it in the circle!
Look at each shaded pie below and write the fraction it shows.
Place < or > between each pair:
Order from least to greatest: