Broken Calculator: Multiplication Cross Product

Adding and Subtracting Fruit

Use super cute fruit to introduce algebraic thinking to your young math students.

Spring Math Worksheets: Multiplication and Division

Sets of multiplication and division practice problems. But the unknown isn’t where you expect it to be!

Math Curiosity: Magic Triangles

Can you make each side of this triangle add up to 9 using the digits 1-6?

The Heaviest Pumpkin

How heavy is the world’s heaviest pumpkin when measured in Mr. Byrds?

How Many Will There Be? Earthworm

Give kids a taste of a sequence, let them build an understanding, and then see how far their predictions can take them.

How Many Will There Be? Courtyard

Give kids a taste of a sequence, let them build an understanding, and then see how far their predictions can take them.

How Many Will There Be? Checkerboard

Give kids a taste of a sequence, let them build an understanding, and then see how far their predictions can take them.

How Many Will There Be? Xs and Os

Give kids a taste of a sequence, let them build an understanding, and then see how far their predictions can take them.

How Many Will There Be? Desks

Give kids a taste of a sequence, let them build an understanding, and then see how far their predictions can take them.

Measurement: An Elephant

What if I told you that an elephant weighed a back-breaking 176,000? Could you figure out the unit I’m using? But… how many corgis would that be?

Measurement: How Big is this Bathtub?

So, if I told you a bathtub holds 640 of water, which unit would make the most sense?

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!

Rounding Numbers (But Not To 10)

What could we possibly do to make rounding more interesting for students who already get it? In this series, students consider how they might round to values other than “the nearest 10.” How, for example, do we round to the nearest 9? 7? 15?

Math Curiosity: Magic Squares

Imagine a 3×3 square in which every row, column, and diagonal have the same sum. That’s a magic square!

Percents and Credit Cards

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

How Many Students Can Fit On The Playground?

So… just how many kids could we cram onto the playground?

A Nutrition-Based Math Project

Let’s create a parody ad attacking a surprisingly calorie-rich meal.