Problem: Yohaku: A new type of number puzzle for students
This article explores number sense problem solving using Yohaku puzzles. Each month, elementary school teachers are presented with a problem along with suggested instructional notes; asked to use the problem in their own classrooms; and encouraged to report solutions, strategies, reflections, and misconceptions to the journal audience.
Contributor Notes
Mike Jacobs, michael.jacobs@dcdsb.ca, is a K–grade 12 mathematics consultant for Durham Catholic District School Board in Ontario, Canada. Originally from Yorkshire in the United Kingdom, he has been teaching for twenty-seven years. He has created Yohaku puzzles as a means of both encouraging problem solving as well as practicing and improving number sense.
