This is a puzzle and a way for children to start to understand fractions. This is a very simple project to make, but the angles need to be precise to fit together well. This is why I chose to use the laser cutter for this project.
You would also be able to cut out the pieces by hand by tracing the shapes onto a piece of wood and using a bandsaw to carefully cut them out.
Step 1: Materials and Tools
YuKonstruct has a Epilog 60 watt laser cutter -- the main tool for this project.
I used CorelDRAW to make my pattern, which is attached here if you'd like to use the same design.
• 8.5" by 32" piece of 0.25" thin piece of plywood
• Acrylic paints and paintbrush
Step 2: The Base and Circles
I wanted to make half circles, quarters, and eights so that they could all fit together. You could also use other fractions (thirds, fifths).
I cut out 5" circles and fractions.
I decided on a 8" by 8" base to fit the circle pieces in to. I chose a very simple design (sun/star) to rastor on to the wood around the cut out circle. I will likely do other iterations of this base in the future with different designs (caterpillar, flower, etc.)
After cutting out the pieces using the laser cutter, I sanded down all of the edges of all of the pieces (including the base).
I tried every iteration of the puzzle to make sure that all of the pieces would slot easily into the base.
Step 3: Paint and Finish
Using acrylic paints, I color coded the circle fractions:
• half circles: Blue
• quarter circles: Green
• eighths: Yellow
I then painted the base for the puzzle.
Once dry, the project was complete!