# Category Archives: Arithmetic

### Fact Family – Truth Mafia or Math Term?

Have you heard of a fact family? Does it make you think of the math mob? Or the truth police? Here’s what it is, really. Continue Reading →

### New Math Multiplication

The new math multiplication has parents confused as to why 5×3 isn’t 5+5+5. My new course shows a bit of reasoning behind it. Continue Reading →

### Addition & Multiplication Don’t Mix

Just as oil and water don’t mix, addition and multiplication don’t mix. Unless you shake really hard! Continue Reading →

### Zero isn’t Bad – She’s Just Drawn That Way

Zero is useful, classy and a lot of fun at parties, but she can get you in trouble if you’re not careful! Continue Reading →

### Some Ways to Tell When a Math Problem is Wrong

Sometimes it’s easier to see when a math problem is wrong than to see when it’s right. Here are some examples. Continue Reading →

### Reducing Fractions is like Folding Clothes

Have you ever thought of fractions while doing laundry? There are some interesting (and enlightening) similarities! Continue Reading →

### Using the Hundreds Chart to Teach Beginning Multiplication

Here’s a different way to start students off on multiplication – they get to use coloring, skip counting and patterns! Continue Reading →

### Fall Factor Trees!

Turn a dry factor tree into a beautiful fall math craft project! Continue Reading →

### Is 0/0 Undefined?

Dividing by zero might end the world. But what if you divide ZERO by zero? Continue Reading →