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

# All AboutMath

## 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!

## The Surprises Within 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?

## Make A *Better* Calendar!

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!?

## Delightful Math Data

I love collecting links to articles with fun math applications. Here are three of my recent favorites.

## What if you lived in Vegas but worked in San Francisco?

Is it possible to *save money* by commuting to San Francisco from Las Vegas?

## A Clock Math Project?

A reader wrote in, asking how to differentiate for a task like reading analog clocks. What to do with a student who has mastered this skill? What’s a good math clock project?

## Long Term Success: Wondering About Math

Continuing our series on long-term success, we look at the art of wondering. Often our gifted kids wonder deeper and longer than others. But do they wonder about math?

## Prime Number Explorations

Students learn about prime numbers early in their careers, but the true, quirky nature of these numbers isn’t really explored unless kids go on to become math majors. Here are three fun prime explorations suitable for even young students.