by MathPickle | Mar 31, 2024 |
Coloring Ukraine (MathPickle 2022) This Feb 2022 activity is rooted in sad world events, but it simultaneously celebrates the tradition of beautiful map colouring puzzles. Here is a map to colour (you’ll need to choose “File” then “Make a...
by MathPickle | Aug 12, 2021 |
Three Color Triangle Puzzles (MathPickle 2021) This logic puzzle is inspired by the brilliant Mathologer video below. The tricks presented above are proved below. Playing with these puzzles is good for upper elementary, but younger kids can get a lot of value from...
by MathPickle | Jul 30, 2021 |
Rainbow Sudoku (MathPickle 2021 – Inspired by Amar Sodhi) In regular sudoku and pentomino sudoku numbers are given as clues. Each region needs exactly one copy of each number. That’s true whether the regions are 3×3 squares or pentominoes. In Rainbow...
by MathPickle | Mar 11, 2020 |
Treefolk Tribes (MathPickle 2020) This puzzle doesn’t have a strong endpoint – you’re exploring for the sake of exploring! Organizing these Treefolk based on their symmetry – whether they want you to or not 😉 Here is a pdf of the seven...
by MathPickle | Mar 10, 2020 |
Emoji Democracy Democracies can be attacked by altering the boundaries of voting regions. This has been done in many countries from Apartheid’s South Africa to Hong Kong under the Chinese Communist Party. Its English word is “gerrymandering.” In this...
