“Why are there so much 1s in these numbers?”

“Why are there so much 1s in these numbers?”

Last spring, I visited a Kindergarten classroom near the end of the year. Students were participating in a Math Workshop focused on the teen numbers, choosing among activities that asked them to identify and recognize teen numbers; to represent them in several...
A Conversation about “Key Words”

A Conversation about “Key Words”

In my years of leading in-person and online professional development, the idea of teaching students that certain “key words” signify a particular operation (e.g. “altogether means add”) often comes up when discussing story problems. People also generally see the power...
A Grade 5 Q&A: Percents

A Grade 5 Q&A: Percents

Question: Why was the work with percents taken out of the 5th grade curriculum in the 3rd edition? Answer: In the 1st and 2nd editions of Investigations, there was a unit (Name that Portion and What’s That Portion?) that included lessons that connected what 5th...
Helping with Math Homework

Helping with Math Homework

In schools that use Investigations, families often feel unsure of how to help their children with math homework. Many parents/caregivers have told me that they don’t understand the strategies their children are using and don’t know what to do if their child is...