Fill the Gaps?

“Fill the gaps!” is the command of many well-intentioned educators. Math especially succumbs to this twisted pedagogy because math is more obviously hierarchical with lower building blocks being required to understand higher building blocks. What is wrong...
Smileys

Smileys

June 24, 2021 Incubator Daniel and Mason presented on Smileys. That’s a puzzle that has you sparsely filling a grid with smiley faces. Then you start the app running. At each time-step a grumpy face turns into a smiley face if it touches two or more smiley...
5×5 Pentomino Sudoku

5×5 Pentomino Sudoku

July 8, 2021 Incubator Asmita Sodhi presented 5×5 Pentomino Sudoku puzzles. These are problems that her father, Amar worked on so they have a special place. You can read more about Amar and these puzzles on pages 10-12 of the 2018 CMS Notes:...