Rotten Apples (multiply, factor)

Rotten Apples (multiply, factor)

Rotten Apples (Rainer Bedrich, 2022) Gather fallen apples. The gathered apples must form a loop where each adjacent pair has one apple is the multiple of another. The apples which are not gathered go rotten, so try to gather the most possible. Even if a student sets...
Stand by me (inductive reasoning, multiplication)

Stand by me (inductive reasoning, multiplication)

Stand by me (MathPickle, 2023) Inductive problem-solving is undervalued. In MathPickle, we give students practice using inductive problem-solving by dropping them in the middle of an alien universe. Unlike our own universe, which has complex laws, these universes are...
Color TV (inductive reasoning, counting)

Color TV (inductive reasoning, counting)

Colour TV (MathPickle, 2023) What a beautiful pattern! I love that it starts out with high symmetry for the 1s, but becomes asymmetric. Can you figure out the laws for the mini mathematical universe? Trevor Hoffman extended the pattern far beyond the video above. Have...
Taxi Cab Triangles (factoring, proof)

Taxi Cab Triangles (factoring, proof)

Taxi Cab Triangles (MathPickle, 2023) I love the look on students’ faces when I call these things triangles. “These are not triangles”, they insist. This is precisely the type of discussion on definitions that is so useful. We might end up calling...
Color Vortex (mini mathematical universe, primes)

Color Vortex (mini mathematical universe, primes)

Color Vortex (MathPickle, 2022) A beautiful Mini Mathematical Universe for your students to discover. What are the rules governing this universe? What questions do you have? If you can answer the question I have in the video I’ll be so so happy!  It is...