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.

# Content Area: Math

## 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.

## How much to fill your car up with Clam Chowder?

Sure gasoline seems expensive. Until you try to fill your car up with printer ink.

## 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.

## Creating A New Mathematical Operation

Do your students realize that addition, subtraction, multiplication, and division are all examples of the same idea: an operation? And that it’s quite possible to create a brand new operation? Let’s do it!

## So What: A Triangle’s Angles

Discovering what is interesting and unexpected about a triangle’s angles. What twists have I unintentionally spoiled for my students over the years?

## Calendars: A Bonanza of Factoring Problems

The calendar is a source of fantastic factoring problems with many social studies add-ons. Why 12 months? Why 30 (or 31 or 28) days? Why are weeks 7 days long? Why don’t they fit into the months (or the year!)? Why did we do this to ourselves and have any people done better?