Desmos activities

Desmos is a really wonderful tool for making interactive math. It's a graphing calculator, but you can do much more with it, including making activities and games. Below are some examples that I've made.

A fuller collection of my Desmos creations can be found here.

Recently Desmos released a beta version of its Geometry tool. It's quite powerful, and a lot of fun to play with. Here are some constructions I recently made with it:

Inscribed angle theorem visualised
Sierpinski triangle, via recursion-esque Desmos code
Interactive math string art

Below are some Desmos activities that I've made. I especially enjoy making games.

Snakes game: trig graphs
Python billiards GCF
Radian angles: space invaders
Right triangle fractal
The 17 wallpaper groups


Here are a couple of embedded Desmos graphs that I made. The first is a snowflake maker. It can be used for teaching about mirror and rotational symmetry, but beyond that it's simply fun to play with. Drag around the fuzzy white dot to draw patterns. Hit the "RESET" button in the lower right to clear the screen.




Here's an animation showing a proof of the Pythagorean Theorem by area-preserving shearing. I added an animated gif of it to the Wikipedia page for that theorem, here. (Other contributions I've made to Wikipedia are collected here.)











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