Comparing Numbers to 100
Using mathematical language (greater than, less than, equal to) and symbols to describe the relationship between different magnitudes.
Key Questions
- Justify how we can prove that one number is greater than another using physical tools or drawings.
- Predict what happens to the value of a number when we add one more ten versus one more one.
- Evaluate why it is useful to estimate a quantity before we count it exactly.
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.
More in Number Sense and Quantity
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Developing the ability to recognize small groups of objects (up to 5) without counting and using visual patterns.
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Visualizing Quantities with Benchmarks
Using benchmarks like five and ten to estimate and understand larger quantities.
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Counting by Ones to 120
Practicing counting forward and backward by ones, starting from any number within 120.
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Skip Counting by 2s, 5s, and 10s
Exploring skip counting by 2s, 5s, and 10s to understand the structure of the hundred chart and number patterns.
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Place Value: Tens and Ones
Understanding that two-digit numbers are composed of tens and ones using concrete models.
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