Arrows Everywhere! (addition)

Arrows Everywhere! (addition)

Arrows Everywhere! (MathPickle, 2025) Here are the grids you’ll need to play this puzzle on paper, but if you happen to have a square tiled flooring in your school – watch the video below and use the big arrows that you’ll also find in that pdf....
Glue (addition, geometry)

Glue (addition, geometry)

Glue (MathPickle 2021) This geometric square-gluing puzzle is one of my best from 2021. The rules are simple (but probably best seen on the video rather than read): 1) Start with two 1×1 squares labelled “1.” 2) Glue a new square labelled with one...
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...
Chomp – Cartesian game

Chomp – Cartesian game

Chomp! (Frederik Schuh, 1952)   Here is the game of chomp and a very preliminary sketch of a game to do with linear inequalities. The latter would be a fun class project to perfect – it is NOT good enough to play right now. Let me know of your ideas how to...