9 and 10 years old

Nine and ten-year-olds are using math to do stuff. They’ll design a brand new pattern the world has never seen, and then devise a scheme to beat you at cards.
Hints at Holiday

Hints at Holiday

I told an abbreviated version of the following story on my math-teacher blog, where I used it to drive home a point to my colleagues. This version is for parents. --- My wife had been out of town for several days. I was tired of doing all the cooking and dishes. It...

8 + 4 = x + 5
The equal sign

The equal sign

It has been a long, busy semester for me in my community college work. Many interesting and productive projects, lots of interesting and challenging teaching problems. But I am tired. Wiped out and exhausted. So I devised a plan the other evening when Tabitha...

Spirals

Spirals

A few weeks back, this short cryptic video came to my attention thanks to the magic of Twitter. https://vine.co/v/MMEJuOXYndP Thanks to kids connect (@KinderFynes on Twitter) For more than a year now, I have been posting links and other short bits on Twitter using...

Midnight on clock face
Bedtime

Bedtime

In the thick of the holiday season last month, Griffin (9) turned his attention to the mythical midnight on New Year's Eve. Griffin (9 years old): Can we stay up until midnight on New Year's Eve? It is a nice touch that he includes his sister in this request. They...

Milk by the gallon

Milk by the gallon

Milk has been on sale at our local gas station/convenience store. Griffin and I walked up there the other day to buy some milk. Two percent milk for the kids and me; skim for Mommy. Me: Griff, the milk we just bought was $5.50 for two gallons. How much was each...

Sharing pears

Sharing pears

I took the kids camping this weekend. Jay Cooke State Park is lovely. I recommend a visit if you have never been. We had the following conversation at the campsite on Saturday evening. Me: Griff, we have two pears and three people. What should we do about...

Five small pumpkins
The Pumpkin Patch

The Pumpkin Patch

On a family trip to a farm from which we have bought a tremendous amount of produce this year, Griffin and I were heading to the pumpkin patch. We had already taken the wagon ride to the other pumpkin patch; where the pie pumpkins were grown. We had helped with the...

City names

City names

We were driving home recently. Griffin was in the back seat reading his book about U.S. Presidents. Griffin (9 years old): Who was the capital of Wisconsin named for?Me: Is this a quiz or a question? This is an important distinction with Griffin. He has both in his...