Proportionality in Similar Polygons
Students will use properties of similar polygons to find unknown side lengths and angle measures.
Key Questions
- Justify why corresponding sides of similar polygons are proportional.
- Predict the length of an unknown side in a similar polygon given a scale factor.
- Construct a proof of similarity for two given polygons.
Ontario Curriculum Expectations
Suggested Methodologies
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Planning templates for Mathematics
5E Model
The 5E Model structures lessons through five phases (Engage, Explore, Explain, Elaborate, and Evaluate), guiding students from curiosity to deep understanding through inquiry-based learning.
unit plannerMath Unit
Plan a multi-week math unit with conceptual coherence: from building number sense and procedural fluency to applying skills in context and developing mathematical reasoning across a connected sequence of lessons.
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Build a math rubric that assesses problem-solving, mathematical reasoning, and communication alongside procedural accuracy, giving students feedback on how they think, not just whether they got the right answer.
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