mathrecreation

A while ago, I posted an exploration of the origami envelope featured on Origami USA's free diagram page that showed that the central r...

Raymond Smullyan's To Mock a Mockingbird introduces an interesting variation on the classic knights and knaves logic puzzles . The lyin...

While travelling around southern Ontario recently, I enjoyed seeing barn quilts along the highway as we drove. Some barn quilts are  truche...

In his book To Mock a Mockingbird , Raymond Smullyan provides another variation on his classic 'knights and knave' puzzles, in whi...

Star and compound polygons are pretty mathematical objects that are fun to draw or create in code. star and compound polygons on 2 to 9 ...