Cannibal Fish

Cannibal Fish

Cannibal Fish This is a game for 3-8 players. Players start by choosing different numbers less than 10. This is their initial fish size. Everyone also agrees to the size of fish that will win the game. In this game, Anna, Bob and Clara have agreed...
Earth Attack – addition puzzle

Earth Attack – addition puzzle

Earth Attack (MathPickle, 2012) Save the Earth by shooting down the invaders as quickly as possible. Unfortunately there is a problem, you only have one ion cannon and it can only shoot at one place at a time. This puzzle is perfect for an open-ended...
Ballast – addition puzzles

Ballast – addition puzzles

Ballast – addition puzzles (MathPickle, 2012) Ballast addition puzzles are great for students learning addition. They are presented with three warships in each puzzle. Two of these can be made to float by balancing the ballast. The remaining warship is...
Bubbling Cauldrons (single digit addition)

Bubbling Cauldrons (single digit addition)

Bubbling Cauldrons (Integer Partitions were first explored by Issai Schur, 1916) After students have found the optimal answer (eight frogs in two bubbling cauldrons) you can challenge students in multiple directions. Let your students decide: 1) David Martin (2020...
Number Icicles

Number Icicles

Number Icicles (MathPickle, 2011) Give your students practice in skip counting. Download the puzzle-sheets here. PS. Some of the harder puzzles are purposefully impossible. It is essential that students get exposure to lots of impossible puzzles – without...