### How to Show the Area of a Circle is πr^2?

Why is the area of a circle pi times the square of the radius? This amazing DIY project will show you the math behind that formula!

Why is the area of a circle pi times the square of the radius? This amazing DIY project will show you the math behind that formula!

- DIY ,
- Geometry ,
- Mathematics ,

The Menger sponge is a beautiful math project. To make a level one Menger sponge, we'll need 20 of these to make a level two sponge.

- Geometry ,
- Mathematics ,
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How do you put a straight rod through a curved slot? If you think it is impossible, you are wrong. We have prepared the instructions for you.

- Mathematics ,
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Do you want to make a smooth ride on square wheels? If yes, then you can follow our instructions to make square wheels.

- Geometry ,
- Mathematics ,
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Constructing the spiral of Theodorus might be a good classroom activity. We have prepared the instructions for you.

- Geometry ,
- Mathematics ,
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Homemade Harmonograph! Finally, a drawing machine to draw for you! If you want to make gorgeous geometric scribbles, this is for you.

- Construction ,
- DIY ,
- Engineering ,

Menger sponge is an intriguing fractal shape. Marquis de Geek made a DIY project to build the Menger sponge from Lego.

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