In developmentSecondary mathematics
Corner cabin
Difference of squares
Overview
A square cabin is installed within the corner of a larger square hall. Students investigate the remaining area and discover how geometric decomposition leads naturally to the difference of squares identity. The lesson connects geometry, area reasoning, and algebraic representation.
Key ideas
- Area subtraction
- Geometric reasoning
- Algebraic identities
- Difference of squares
How this lesson is built
This lesson follows the MSS learning flow: situation, observation, exploration, representation, formalisation, and application.
Read the full learning flowResources
- Lesson designComing soon
- Teacher guideComing soon
- Student activitiesComing soon
- Assessment ideasComing soon
Lesson video
Lesson video coming soon.