Divisibility Tricks

Divisibility Tricks

Divisibility Tricks Divisibility tricks allow you to figure out if an integer is divisible by another integer. Again, this video is a lower priority than the engaging puzzle videos, but it should open up some interesting challenges. Games give you a chance to excel,...
Dressed Up (Equivalent) Fractions

Dressed Up (Equivalent) Fractions

Dressed Up (Equivalent) Fractions (MathPickle, 2013) Equivalent fractions should be explored first using the engaging Fractured Fraction puzzle. Only later is this structural video an option. Engagement first, structure second. This video introduces a challenge: how...
Unfair Thrones

Unfair Thrones

Unfair Thrones (MathPickle, 2013) This was MathPickle’s first puzzle to get into the New York Times. It is perfect to give students motivation to subtract fractions and turn the result into a percentage. Start the class by naming an empress and getting her to...
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...
Sum or Difference – Mutant Fibonacci Bunny

Sum or Difference – Mutant Fibonacci Bunny

Sum or Difference – Mutant Fibonacci Bunny (MathPickle, 2012) These sequences are fun to set up mini-competitions in your classroom. After an initial exploration in front of the class, groups can challenge one another to reach a certain number as fast as...