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Natural Disasters Tournament

Earthquake vs. hurricane. Tsunami vs. wildfire. Students set the criteria, argue their case, and crown a champion. Warning: it gets heated.

Differentiate with Low Floors and High Ceilings

For Teachers

Stop starting at grade level and stretching up. Start high and scaffold down. It’s simpler, and it actually works.

Random Emoji Prompt Generator

Click up an interesting, visual writing prompt suitable for any grade or purpose.

Not Like The Others: Microorganisms

Four microorganisms. One doesn’t belong. But which one? That depends on your argument.

Fizz Buzz: A Counting and Divisibility Game

Ready for a tricky counting and divisibility game?

How Many Ways: Fractions Divide Equals 2/3

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

Introduction to Differentiation

For Teachers

When differentiating, most teachers simply start in the wrong place!

Thinking With Art: Head Down

One artist, two paintings. Notice details, compare, synthesize, then find a parallel in another creator’s work.

Create Your Own Operation

The commutative and associative properties are a whole lot more interesting when you apply them to a mathematical operation that you created!

What If There Were No Hundreds Place?

Imagine a world with no hundreds place. We’d have to call it ten tens instead. But then, what would we call the thousands place? How would we read 9999? What if we added one more?

Disneyland Parking Structure Math Project

Your students will use estimation strategies to figure out how many parking spots are there in the parking structure at Disneyland? And you bet I reveal the real answer!

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.

Writing A Story About Fraction Equivalence

When fractions take on a new denominator, it’s as if they’re wearing a disguise – same value, new look. So let’s write a story about fraction equivalence starring a fraction who needs to fit in with a new group.

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?

Propaganda and Logical Fallacies

Let’s see how propaganda techniques can make even something great seem bad.

Showing A Character’s Trait

We tell students to ‘show, not tell’ — but that advice is useless until they experience the difference. This lesson makes it click.

Fraction Puzzlers: Add and Subtract Fractions To Reach A Number

You only have six digits to form three fractions. Can you combine them to get to 0?

Furnishing A Hotel

Design and furnish hotel rooms on a budget. Real math, real constraints, real decisions. Then pitch your hotel to investors.