An Oldie Revisited: The Border Problem



Tuesday, April 19th, 2016
Here's one of my favorite oldies. (No, not the photo—the border problem.) I was so pleased to see this math investigation included in Jo Boaler’s latest paper. This blog post presents a detailed lesson plan for using the border problem with students and also includes a five-minute video clip to give you a sense of how the instruction went with one class.

Read more »

Fix It: An Activity for Ordering Fractions



Friday, December 11th, 2015
At a math workshop, the presenter suggested that students have opportunities to be producers as well as consumers of their learning in the classroom. I put this advice into action with fifth graders, using the activity of Fix It to provide students additional experience with comparing and ordering fractions.

Read more »

One Children’s Book . . . Different Grade Levels



Tuesday, December 8th, 2015
In a previous blog, I described a lesson I taught to second graders using the wonderful children’s book One Is a Snail, Ten Is a Crab. At John Muir Elementary School in San Francisco, I observed two other lessons using the same book, one in Kindergarten and the other in fourth grade. The lessons were a joy to observe, and I feel that my own teaching repertoire has now been enhanced.
Read more »

Chrysanthemum—An Oldie but Goodie



Tuesday, November 10th, 2015
Are you interested in a lesson that combines a wonderful children’s book with activities that engage students with organizing data and reasoning numerically? Read about how lessons using Chrysanthemum unfolded in two classes.




Read more »

Can You KenKen?



Thursday, October 1st, 2015
I’ve taught students in grade 2 through middle school how to solve KenKen puzzles. If you’ve never solved KenKen puzzles yourself, or haven't engaged your students with them, read about how I’ve introduced them in the classroom. But be warned: KenKen puzzles can be addictive.




Read more »