Grade 3 Mathematics — Term 2, Week 3
5 day-plan(s) · WeLearn JA MATH T2 G3
Day 1: 2-Digit x 1-Digit, No Renaming (Concrete)
Grade 3 Mathematics · Term 2, Week 3 · 60 min
| Objectives | Multiply a 2-digit number by 1-digit without renaming using blocks. |
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| Materials | Base ten blocks, place value mats |
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| Key vocabulary | tens, ones, partial product |
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| Engage (starter) | "3 groups of 12 - build it!" |
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| Develop (main) | Interactive: build 3 sets of 12 with blocks; combine ones then tens; record 3x12=36. |
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| Plenary (close) | Show 2x14 with blocks. |
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| Assessment | Correct concrete products. |
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| Teacher notes | No trading needed today. |
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Day 2: 2-Digit x 1-Digit, No Renaming (Abstract)
Grade 3 Mathematics · Term 2, Week 3 · 60 min
| Objectives | Use the algorithm without renaming. |
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| Materials | Whiteboards |
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| Key vocabulary | algorithm, multiply ones, multiply tens |
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| Engage (starter) | "Write the block steps as an algorithm." |
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| Develop (main) | Interactive: solve 4x21 and 3x23 on whiteboards; multiply ones then tens; connect to yesterday's blocks. |
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| Plenary (close) | Solve 2x34. |
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| Assessment | Correct algorithm. |
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| Teacher notes | Line up place values. |
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Day 3: Multiply with Renaming (Concrete)
Grade 3 Mathematics · Term 2, Week 3 · 60 min
| Objectives | Multiply with renaming using blocks. |
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| Materials | Base ten blocks |
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| Key vocabulary | regroup, rename, carry |
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| Engage (starter) | "3 groups of 15 - watch the ones!" |
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| Develop (main) | Interactive: build 3x15; ones make 15, trade 10 ones for a ten; combine tens; record. |
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| Plenary (close) | Show the trade for 4x16. |
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| Assessment | Correct trading. |
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| Teacher notes | Concrete before abstract. |
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Day 4: Multiply with Renaming (Abstract)
Grade 3 Mathematics · Term 2, Week 3 · 60 min
| Objectives | Use the algorithm with renaming. |
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| Materials | Whiteboards |
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| Key vocabulary | carry, regroup |
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| Engage (starter) | "Where does the carried ten go?" |
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| Develop (main) | Interactive: solve 4x17 and 3x26; show the carried digit above the tens; practice. |
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| Plenary (close) | Solve 5x18. |
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| Assessment | Correct carrying. |
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| Teacher notes | Add the carry after multiplying. |
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Day 5: Estimate, Check and Review
Grade 3 Mathematics · Term 2, Week 3 · 60 min
| Objectives | Estimate products by rounding and check with addition. |
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| Materials | Whiteboards |
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| Key vocabulary | estimate, round, reasonable |
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| Engage (starter) | "Is your answer reasonable?" |
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| Develop (main) | Interactive: round a factor to estimate (4x19 is about 4x20); solve exactly; compare; check by repeated addition. |
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| Plenary (close) | Estimate then solve 3x28. |
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| Assessment | Reasonable estimates. |
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| Teacher notes | Estimation catches big errors. |
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