In a time before people could cure their boredom by looking down at their phone and immediately retreating into an individual silo of entertainment... (2018)
Pencil and Paper Games is devoted to games you can play with nothing more than a pencil and a piece of paper. These games are ideal for entertainin... (2017)
mathoverflow: "Background: My daughter is 6 years old now, once I wanted to think on some math (about some Young diagrams), but she wanted to play ... (2017)
A database of paper airplane folding designs and instructions (2018)