Finding the Unknown in Addition
Solving simple algebraic problems where a part of the addition equation is missing.
Key Questions
- Explain how we can find a missing part if we already know the whole.
- Analyze what strategies can we use when the answer is given but the starting number is a mystery?
- Justify why the equals sign means 'is the same as' rather than just 'the answer is'.
NCCA Curriculum Specifications
Suggested Methodologies
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Planning templates for Foundations of Mathematical Thinking
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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