Math

Which is longer: a Ray or a Line?

Let’s move beyond memorizing definitions and get kids grappling with the fascinating concept of infinity!

Universal Themes in Math? With Fractions!?

What if we used a universal theme to guide our study of fractions? These very big ideas get students thinking about fractions in a new way.

Using a Classic in Math!?

According to Costello, 7 × 13 = 28. In fact, watch him prove it…

Could we fit 1,000 kids on the playground? 10,000?

If your students can find the area of a square then, armed with Google Earth, they can also figure out how many students you could pack into your school’s playground.

Fizz Buzz – A Divisibility Game

Here’s a quick to learn but difficult to master math game. Start with some basic divisibility rules, but then feel free to extend it to any math topic.

The Coloring Problem

How few colors can you use to fill in a map so that no neighboring regions are the same color?

Thinking Like Equivalent Fractions

Go across disciplines by asking students to write a story about fraction equivalence.

Calculating the Volume of Laptops

So once your students can calculate volume… what do you have them do next? In this math project, kids will look up historic laptops, calculate their volumes, and note how technology has changed over time.

Fill ‘er up with Clam Chowder!

Sure gasoline seems expensive. Until you try to fill your car up with other liquids!

Making Awful Graphs

Sometimes we can learn a lot by doing something the wrong way. Here are six ways your students can purposefully design awful, misleading graphs.