Number

Counting, skip counting, fractions, negative numbers, and more.

A walk around the lake

A walk around the lake

A very snowy winter is turning to a long, slow spring here in Minnesota. It is the kind of spring that makes us joyful for sunny 45° days. So I went for a long walk Sunday afternoon. Together with a meaningful percentage of the population of the city of Saint Paul,...

One Perfect Page

One Perfect Page

I have read a lot of books in the last year. There have been some lovely novels, a bit of nonfiction, parts of a textbook about the mathematics of patterns. Through it all, one page sticks out vividly in my memory, from Grace Lin's The Last Marshmallow. Simple....

In which we determine how many grapefruits and avocados there are, and observe the brilliance of young children.

Cold snap

Cold snap

Below zero temperatures lead to comparisons of positive and negative numbers, and the solution to 4 – (-1).

Birthday Chocolate

Birthday Chocolate

A birthday present turns into a quick discussion of fraction division.

Weighing onions

Weighing onions

I have had several conversations with relatively new parents in which the question of how/whether to talk math with babies. I always try to help such parents see math like they see reading. You read with your baby long before she knows what your words mean. An...