Mondrian Art Puzzles (multiplication, algebra)

Mondrian Art Puzzles (multiplication, algebra)

Mondrian Art Puzzles People who gaze upon a piece of Mondrian art should ask how he decided which colors to paint where.  The disgruntled person may even ask what the piece of artwork might have looked like if Mondrian had taken the time to color it all in… In...
Beetle Blitz!

Beetle Blitz!

Beetle Blitz! (MathPickle, 2013) We learn best through hard fun. These games are for students who need practice with single digit multiplication. They are entirely unfair – almost always one beetle will have a winning strategy. I love to emphasize this to help...
Daedalus and Icarus try to Escape

Daedalus and Icarus try to Escape

Daedalus and Icarus try to Escape (Lothar Collatz, 1937) The Collatz conjecture from 1937 is essential in every student’s experience of mathematics. Here we present it with a backdrop from Greek mythology. It gives students practice in multiplying by 3 so when the...
Recamán’s Sequence

Recamán’s Sequence

Wreckerball & Recamán’s Sequence (Bernardo Recamán, 1995) What a delicious way to play on the number line! In these sequences you jump about by increasing intervals. The patterns that result are chaotic and beautiful. Nothing must be advanced in a positive...
Subtraction Magic with 3 Digits

Subtraction Magic with 3 Digits

 Subtraction Magic with 3 Digits (Martin Gardner or earlier) Students need to reliably add and subtract numbers of several digits in order for this to work in the classroom. It is not a good trick to teach these, but rather to review something that 80% of students...