I'm Bon Crowder and the photos above are both of me - in 1989 and today. I'm a Generation X mom of Generation Z kids.

I began peer tutoring in high school in 1984. MathFour.com is the 2015 version of me helping peers be comfortable in math.

If you're a Gen-X parent, you're in the right place!

# Tag Archives: Wordless Wednesday

### Toilet Paper Math

What can you ask about the math in toilet paper? Continue Reading

### Math Necklace with Circles!

Where do you see math? In your jewelry? Take a peek – I’ll bet you have some! Continue Reading

### Fahrenheit to Celsius – Graphically!

The conversion from Celsius to Fahrenheit and back again can be strange. One way to understand it is on a graph. And you can use this to teach some linear algebra too! Continue Reading

### 3 Responses to Fahrenheit to Celsius – Graphically!

1. aRandomGuy says:

Cool

• Bon says:

Thanks, Random Guy!

2. ed birk says:

what i’m trying to noodle through is 1) why do they mirror each other at 45 degrees x=y and 2) why do they converge at about -40 degrees? why that point rather than zero? Can you help?

### EdCamp Fun

I got a little fanatic with my excitement for EdCamp Waller today. So I painted my face with the logo – and used a green bow for the leaf! Continue Reading

### Seeing Rectangles in Rapunzel's Hair

I would never have seen this rectangle – but K8 noticed it! Continue Reading

### 2 Responses to A Halloween Puzzle: Rubik's Cube

1. I love her costume!! So cute! There is 1 green and 9 orange squares missing. It is not possible to twist the Rubik’s cube into this combination. Each center cube on each side does not move (it is fixed) so the blue in the center and the back is not possible.

• Bon says:

Lindsay, you’re brilliant!

I was thinking that the bonus would be super hard. You looked right for the simple thing to start – are there unique middle squares?

(Reading your answer and seeing your site makes me wonder if there’s a message in the binary code on the header…)

### Extreme Sports with Extreme Math – Kitesurfing

Have you seen this extreme sport? If so, you’ve seen tons of math in action! Continue Reading

### Adding Decimals – All Wrong!

Adding decimals can be challenging. But it turns into fun weirdness (and some discovery) when you see the result of doing it wrong. Continue Reading

### 4 Responses to Adding Decimals – All Wrong!

1. Thanks for the laugh! I’m going to have to look for an opportunity to try this on someone…

• Bon says:

I wasn’t able to get feedback from the students that this might have affected (the “louder” students seemed to already know this didn’t work) but I certainly hope that it hit someone just right. Sometimes a good way to do something is the only way that doesn’t mess things up. So if they see that mis-lining up the decimals will give you two of them, maybe they’ll always go back and realign!

Thanks for stopping by, Denise!

• Bon says:

I’m always excited about joining in a new blog carnival, Adam. I hope yours keeps rolling!

### Nature's Wonders

Spirals in sea shells have a fun and curious math behind them. But this is just a nice photo to enjoy! Continue Reading

# MathFour.com

Calming generation X in math since 1985.

Want more? Check out the Facebook Group Empowering Parents to Tackle Math . Or sign up for one of the parent support online classes!