Grade 2 Mathematics — Term 2, Week 2
5 day-plan(s) · WeLearn JA MATH T2 G2
Day 1: Subtraction: 2-Digit without Regrouping
Grade 2 Mathematics · Term 2, Week 2 · 60 min
| Objectives | Subtract 2-digit numbers without regrouping. |
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| Materials | Base ten blocks |
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| Key vocabulary | subtract, difference, take away |
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| Engage (starter) | "Build 45. Now take away 22." |
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| Develop (main) | Interactive: Build the starting number only. Physically remove ones, then tens. Record the algorithm. |
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| Plenary (close) | Share your difference. |
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| Assessment | Correct subtraction. |
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| Teacher notes | Ensure they only build the top number. |
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Day 2: Subtraction: The Need for Regrouping
Grade 2 Mathematics · Term 2, Week 2 · 60 min
| Objectives | Recognize when regrouping is necessary. |
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| Materials | Base ten blocks |
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| Key vocabulary | regroup, exchange, borrow |
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| Engage (starter) | "Build 32. Can you take away 5 ones?" |
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| Develop (main) | Interactive: Pose impossible take-aways. Guide students to trade 1 ten rod for 10 ones blocks to make it possible. |
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| Plenary (close) | When do we need to trade? |
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| Assessment | Accurate identification. |
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| Teacher notes | Focus on the "why". |
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Day 3: Subtraction: 2-Digit with Regrouping (Concrete)
Grade 2 Mathematics · Term 2, Week 2 · 60 min
| Objectives | Subtract with regrouping using manipulatives. |
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| Materials | Base ten blocks, mats |
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| Key vocabulary | regroup, difference |
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| Engage (starter) | "Let's solve 53 - 17." |
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| Develop (main) | Interactive: Build 53. Trade a ten for 10 ones. Now subtract 7 ones, then 1 ten. Record the final amount. |
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| Plenary (close) | Show your steps. |
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| Assessment | Correct trading. |
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| Teacher notes | Concrete manipulation is key here. |
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Day 4: Subtraction: 2-Digit with Regrouping (Abstract)
Grade 2 Mathematics · Term 2, Week 2 · 60 min
| Objectives | Use the standard algorithm for subtraction. |
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| Materials | Whiteboards |
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| Key vocabulary | algorithm |
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| Engage (starter) | "How do we write our trades on paper?" |
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| Develop (main) | Interactive: Model crossing out the tens and ones to show the trade (e.g., 5 becomes 4, 3 becomes 13). Practice on whiteboards. |
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| Plenary (close) | Solve on the board. |
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| Assessment | Correct crossing out and solving. |
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| Teacher notes | Check for subtracting bottom from top incorrectly. |
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Day 5: Subtraction: Regrouping Review
Grade 2 Mathematics · Term 2, Week 2 · 60 min
| Objectives | Consolidate 2-digit subtraction. |
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| Materials | Worksheets, blocks |
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| Key vocabulary | review |
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| Engage (starter) | "Subtraction detectives!" |
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| Develop (main) | Interactive: Find the errors in pre-solved problems on the board. Then solve a set independently. |
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| Plenary (close) | Explain the mistakes you found. |
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| Assessment | Independent accuracy. |
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| Teacher notes | Error analysis builds deep understanding. |
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