I've been doing some learning about the no-three-in-line problem (https://en.wikipedia.org/wiki/No-three-in-line_problem) in order to discuss it in an intro-level class – which I think is harder than discussing it in an advanced class. Fascinating stuff in any case.
This had to exist; I'm only surprised I haven't run across it before.
Very nice (if slightly soporifc) video intro to combinatorial game theory via Hackenbush.
The site FeltMagnet has lots of art/craft/drawing tutorials like How to Draw a Bucket, How to Draw an Anchor, How to Draw a Cute Cartoon Zombie, How to Draw Peppa Pig, How to Draw Four Dimensional Figures...
If I may speak up for my own writing here, I've begun my mathematics blog's annual glossary project. In line with my very worn, battered spirits, it's a smaller one than usual. To start the Little 2021 Mathematics A-to-Z, the letter ... M, for Multiplication.
I like this video from Scott Kim about designing puzzles but I want more. Anybody know any pages or videos about designing puzzles worth recommending?
Trying to thing of a top-down scrolling shoot-em-up game that I was playing on an IBM of some sort in the early 90s. The main feature I remember was really gorgeous alien landscapes, and the title was something that explicitly named itself as a shooter - something like "Shoot Everything that Moves" ... AH HA! IT JUST CAME TO ME. It ws "If It Moves, Shoot It." That concludes this broadcast. Thank you for listening; good day.
This has got to be one of the most useful websites I have ever come across.