What is the difference between Number Strings and Number Talks?

What’s the difference between a Number String and a Number Talk?

Chocolate Arrays

Lately, I’ve been seeing arrays everywhere I go: at the grocery store, at the pharmacy, at the farmers’ market. And, … More

Disequilibrium is Piaget’s term to describe when what a learner already knows comes into conflict with new information. Learners must … More

When designing strings, there are typically one or more helper problems before a challenge problem. For example, you might start … More

We recently learned that the third grade team at Manhattan School for Children (Elizabeth Frankel-Rivera, Madelene Geswaldo, Alice Hsu and … More

After looking over beginning-of-the-year assessments, a new 4th grade teacher was concerned that half of her students were still unsure … More

I recently worked with a 6th grade teacher, Miss T, as she led a string for the very first time. … More

Here are two photos I snapped as I walked by a 99 cent store in LA. Beautiful arrays, no? I … More