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 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...
by MathPickle | Jun 5, 2019 |
Packing Pasta (MathPickle, 2019) This problem is good to introduce volume and density calculations to a classroom. Top students and those interested can continue to the greatest packing website in recreational mathematics: Erich’s Packing Center. The pages...
by MathPickle | Mar 19, 2019 |
If you have not seen the original jumping frogs puzzle you might want to watch the video below – paying special attention to the lazy toads. This exploration starts out with an exploration of lily pads linked together – but not necessarily in a line. The...
by MathPickle | Feb 11, 2019 |
Twisted Homes are haunted. Ghosts and ghouls drift in slow-moving vortices and walking around the drafty rooms can be disorienting. Vampires have four rules to build a twisted home. Rule 1: Each room must be the same size. This home fails because the green room is...
