7 and 8 years old

Seven and eight-year-olds are making arguments. They’ll tell you something is true, and why it has to be true. More and more, they see math in the world, and they want to tell you about it.

Dots!

Dots!

The New York Times published an article about Common Core homework this week. As is going to be the case with a news article (in contrast to say, a post on a blog dedicated to children's mathematical ideas), one can't really learn any mathematics from the...

Griffin in front of huge walleye statue
Nights of Camping

Nights of Camping

The following conversation took place in the run-up to our annual summer camping trip recently. Rachel has no interest in camping, so this ritual is all mine. I started the little ones young with a one-night trip within an hour from home so that we could come home...

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...

What makes a sandwich

What makes a sandwich

The 3-year old daughter of fellow Minnesotan, fellow math teacher and friend Megan Schmidt made the following proclamation a couple weeks back. It takes three things to make a sandwich #Tmwyk— Megan Schmidt (@Veganmathbeagle) May 23, 2014 This simple...

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...

Tens again

Tens again

Slowing down at the end of a long, active spring day. Stormy clouds are rolling in. Tabitha and I watch them together for a couple of minutes from the west-facing window at the top of our stairs. I ask Tabitha if I can ask her a quick math question. She consents....

Twister

Twister

Tabitha received a Twister game for her recent birthday (7 years old!) She enjoys a version of the game in which one person spins and the other follows instructions until, as Tabitha puts it with much delight, the cookie crumbles. The players switch roles for...