This problem introduces children to algebra by looking for a pattern and generalizing with a rule. Students explore in how many different ways can a stick of 6, 7 or 8 different colored interlocking cubes be broken into two parts. The Teachers' Notes page offers rationale, suggestions for implementation, discussion questions, and an idea for support and extension.

This 13-page article presents eight aspects to consider when creating a classroom culture that supports problem solving. The article identifies each of the eight aspects and then goes into more detail suggesting activities that can be done in the classroom to promote more student discourse and problem solving. Throughout the article are links to supportive math activities, research articles and professional development activities.

This interactive problem provides an opportunity for children to become familiar with Venn diagrams, while reinforcing knowledge of number properties. Students must place the numbers from 1 to 40 into a Venn diagram of two sets with an intersection. The Teachers' Notes page offers rationale, suggestions for implementation, discussion questions, ideas for extension and support.