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Numerator or Denominator: Which has more power in a fraction?

What do you do with students who already get their fraction operations? Give them a contrived project about recipes or pizza slices? Make them solve annoyingly hard practice problems? Please. Here, we get students thinking in a whole new way, pondering which has more power, the numerator or denominator.

How Many Ways: 2 Digits ÷ 1 Digit = 1 Digit

How many different ways can you make this math statement true using only the digits one through nine?

Why Is Our Calendar So Weird!?

Why are there 12 months? Why don’t weeks fit into months evenly? Why don’t weeks fit into the year evenly? What’s going on with the calendar!

Grouping Quadrilaterals In A Hierarchy

Can we classify quadrilaterals like we classify living things?