Smileys (algebra, patterns)

Smileys (algebra, patterns)

Smileys (Daniel Hodgins & Mason Philips, 2021) The Julia Robinson Mathematics Festival has an app that offers a playful start: https://jrmf.org/puzzle/smileys/ I like this activity as an algebraic exercise. I have not proven the solutions presented in the video...
Chalk Scratch (logic puzzle)

Chalk Scratch (logic puzzle)

Chalk Scratch (MathPickle, 2021) This logic puzzle is inspired by the Japanese puzzles like Sudoku and the colouring craze… Chalk Scratch puzzles require you to have eight colours to write with. There are two printable pages of chalk scratch puzzles here. To...
Rooting for NASA (Cartesian, Pythagoras, Algorithm)

Rooting for NASA (Cartesian, Pythagoras, Algorithm)

Rooting for NASA (MathPickle, 2020) ReStudents can use Pythagoras to find all possible lengths of line segments on a grid. But what can you do with these line segments… Here are some ideas. They’re really just universes to explore. They look beautiful and...
Treefolk Tribes (symmetry, sorting, sequence)

Treefolk Tribes (symmetry, sorting, sequence)

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...