By Jody Guarino
As a teacher, I constantly wonder how I can elicit student thinking in order to gain insight into the current thinking of my students and leverage their thoughts and ideas to build mathematical understandings for the class.
First, I need a task that will make student thinking visible. Here’s a task from Illustrative Mathematics, Peyton’s Books.
Peyton had 16 books to take on his trip. He lost some. Now he has 7 books. How many books did Peyton lose?