If you like modular origami and want an eco-friendly twist, try building this 3D Dodecahedron model from painted toilet paper rolls. It’s a fun way to blend creative crafting with geometry exploration. Learn geometry concepts via the practical application of tools like protractors and rulers to make it a fun and creative learning process. And you can also make a festive holiday decoration!
What You Need
- 6 toilet paper rolls
- Protractor (to mark 72° angles)
- Scissors
- (Optional) Iron (for smoother flattening)
- (Optional) Paint and brush (or markers)
Steps
- Paint First (Optional)
- It’s easier to paint the rolls while they’re still round.
- Allow them to dry before continuing.
- Flatten the Rolls
- Press each roll flat by hand or use warm iron
- If you’re using an iron, cover the painted roll with a sheet of paper to prevent paint from transferring onto the iron.
- Measure & Cut
- Using a protractor, mark a 72° angle on one end of the flattened roll, then cut.
- Measure the newly cut angled edge.
- Cut at 1/5 of that edge length.
- Repeat until you have 30 identical pieces.
- Interlock in Threes
- Join three pieces at a time to form “corner” sections.
- Keep building until the dodecahedron naturally closes up.
- Decorate & Display
- Tie a string through one of the corners to hang as a Christmas ornament.
- Combine multiple for a garland.
- Enjoy at home or in the classroom for holiday décor or year-round geometric fun.
Why Try This?
- Upcycle & Reuse: Give a second life to everyday materials.
- Hands-On Geometry: Perfect for teaching angles, measuring, and practical application of geometry concepts.
- Creative Décor: Display as individual Christmas ornaments or string them into a festive garland.
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