The Problem-solving Classroom: the Teacher's Role

This sequence of tasks, part of our feature The Problem-solving Classroom, offers an approach to teaching mathematics that exemplifies a model of 'exporation, codification, consolidation' (Ruthven, 1989).  For more information, please see the article included in the above feature.

Domino Sets

Age 7 to 11 Challenge Level:

How do you know if your set of dominoes is complete?

Amy's Dominoes

Age 7 to 11 Challenge Level:

Amy has a box containing domino pieces but she does not think it is a complete set. Which of her domino pieces are missing?