Broken Calculator: Simplifying Fractions

Find The Pattern: Multiply Fractions

What if you set the stage for students to discover how to multiply fractions?

How Many Ways: Fractions Divide Equals 2/3

One equation. Digits one through nine. How many ways can you make it work?

How Many Ways: Fractions Multiply 2/3

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

How Many Ways: Divide Fractions Equal 1/4

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

How Many Ways: Multiply Fractions Equal 1/4

One equation. Digits one through nine. How many ways can you make it work?

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.

Undoing Multiplication With Division

Multiplication and division, natural foes, are constantly seeking to undo each other. Students will attempt to reverse the effects of multiplication by dividing once, twice, or even thrice!

Calculators, Patterns, and Multiplying By Decimals

Before teaching students the procedure for multiplying with decimals, how much can they intuitively glean from a structured play session with calculators?

Visualizing Fraction Multiplication

What does it look like to multiply fractions?

Percents and Credit Cards

Let’s buy something expensive with a credit card and then make only the minumum payments!

Math Curiosity: Collatz Conjecture

The Collatz Conjecture: start with any number and get to 1 using just two rules. It seems to always work…