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Gap Closing Resources

Gap Closing resources are designed for students who need additional support in mathematics. For each topic in the resource, there is a diagnostic and a set of intervention materials. Diagnostics are designed to uncover the typical problems students have with a specific topic.



Dr. Marian Small, lead author of the Gap Closing materials, gives a brief description of how and why this resource was developed.

Number Sense Junior / Intermediate


Intermediate / Senior


Additional Resources

Gap Closing ePractice – Fractions
ePractice is a series of digital interactive mathematics activities to practice and build understanding. Immediate feedback is provided. An electronic copy of the aligned Gap Closing lesson can be accessed through ePractice.

Gap Closing: Planning for Your Whole Class (video)

Conversation regarding how to plan for a grade 9 applied solving equations mathematics lesson to support students identified as needing more support through the gap closing diagnostic assessment