Can’t believe this was the Bizarro cartoon for today. Off to Twitter Math Camp!
A collection of sketches on OpenProcessing by Diana Lange used for teaching Processing. -
A real Treasure Trove! :) From total beginner to more advanced.
Wow! Simon Gregg got playing with the same 20-80-80 triangle as I did, but his results are a lot prettier! Read the post. Wonder at the marvels.
[video]
[video]
Two curves cut all circles at right angles: straight line and a tractrix.
I didn’t know what a tractrix was, so I Googled it! Tractrix definition from Wikipedia: Tractrix (from the Latin verb trahere ”pull, drag”; plural: tractrices) is the curve along which an object moves, under the influence of friction, when pulled on a horizontal plane by a line segment attached to a tractor (pulling) point that moves at a right angle to the initial line between the object and the puller at an infinitesimal speed.
Here’s a gif from Wikipedia showing a tractrix being created from dragging a pole:
How Math Should Be Taught - Jo Boaler
I agree 100%. But will always be working to get there.
[video]
[video]
{7,3} Tiling by John Baez via @amermathsoc
Heptagonal Hyperbolic. John blogs at Azimuth, might want to check it out. Lots of mathematical study of climate change.
(via smoot)