When the Math Is What’s Exciting

When the Math Is What’s Exciting

I’ve been really lucky to spend time in a grade 1 classroom this spring, as they tackle the final number unit of the year. 1U7 is the culmination of students’ work with addition, subtraction, and place value. Building on the work of the earlier number units, it...
The Hard Work of Counting by Groups, Part 2

The Hard Work of Counting by Groups, Part 2

Last week, I wrote about some first graders’ work on problems about how many fingers were on 4 or 8 hands. This week, I want to share an interaction I had with one child, as the class’s work turned to thinking about groups of 10. Students were working on two types of...
The Hard Work of Counting by Groups

The Hard Work of Counting by Groups

The other day I visited a class that was at the very beginning of How Many Tens? How Many Ones?, the final unit of the grade 1 sequence on Addition, Subtraction and the Number System. The class began with a conversation in which they modeled, recorded, and discussed...
“That Seems Way Too Big”

“That Seems Way Too Big”

On a recent visit to a small district in the Midwest, I got the chance to visit a third grade class that was working on division (3U5, Session 3.4). When I joined Nicole, she was in the middle of working on the following problem: Gil loves toy cars. He saved enough...
What Happens When There Are More Than 10?

What Happens When There Are More Than 10?

Imagine you are 6 years old. Or 7. You know you can use your fingers to model subtraction. For example, for a problem where there are 7 grapes and 2 get eaten, you can raise 7 fingers, put down 2, and count how many are left. But what do you do when the problem...
¡Gracias, Myriam, y Hasta Luego!

¡Gracias, Myriam, y Hasta Luego!

Our colleague, Myriam Steinback, is heading off on a new adventure. Her departure, after 21 years directing Investigations Workshops, gives us the opportunity to reflect on her work and contributions. Investigations professional development provides opportunities for...
From “Uh Oh!” to “Aha!”

From “Uh Oh!” to “Aha!”

Over 20 years ago, just out of college, I applied for a job at TERC after seeing an ad in a newspaper. A project called Investigations in Number, Data, and Space was looking for a classroom observer. I had spent most of my college years volunteering in an elementary...
Welcome to our Blog!

Welcome to our Blog!

We – the staff of the Investigations Center for Curriculum and Professional Development – are thrilled that the new Investigations 3 website is live, and are particularly excited to now have a blog. We have been reading lots of blogs in anticipation of starting our...