Flexible Addition Strategies
Students develop mental math strategies for addition within 1000, focusing on properties of operations.
Key Questions
- Analyze how we can use the properties of numbers to make mental addition easier.
- Explain different strategies for adding three-digit numbers mentally.
- Construct a proof that our answer is correct using a different strategy.
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.
rubricMath Rubric
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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