# 9 and 10 years old

Same Idea or Different?

## Same Idea or Different?

I am currently writing the teacher guide for my next book, How Did You Count? (See a couple of teaser photos at the end of this post!) A section of a chapter of that teacher guide has the heading Seek to Understand and to Be Understood. Those who know my teaching...

On Being a Math Person (or Not)

## On Being a Math Person (or Not)

One of my favorite parts of Math On-A-Stick is that it creates opportunities for positive conversations about math with adults. Ask any math teacher, and they'll confirm that when meeting a new person and revealing the work that they do, there is a high probability...

Which fits where? A three-dimensional challenge

## Which fits where? A three-dimensional challenge

Each solid fits in at least one cutout, and each cutout fits at least one solid. Which is which and how do they fit?

Mathy picture book recommendations. Both old and new, these are some of my favorites.

Things that give me hope

## Things that give me hope

Some great recommendations for mathy fun in person and online, and a lovely book by A.O. Fradkin and A.B. Bishop.

Time Zones

## Time Zones

When children hit adolescence, the conversations need to be more about them and their interests. Here's what that looks like.

Cold snap

## Cold snap

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

How Many? An invitation to #unitchat

## How Many? An invitation to #unitchat

Make math playful with a simple question that has uncountable answers.