Lesson Plan for Year 2 - Mathematics - Addition and Subtraction (two-digit numbers)

**Lesson Plan: Mathematics for Year 2** **Topic:** Addition and Subtraction (Two-digit Numbers) **Lesson Duration:** 1 hour **Objective:** By the end of the lesson, students will be able to: 1. Add two-digit numbers together with and without regrouping. 2. Subtract two-digit numbers with and without regrouping. 3. Solve simple word problems involving addition and subtraction of two-digit numbers. **Materials Needed:** 1. Whiteboard and markers 2. Number cards (two-digit numbers) 3. Base ten blocks or place value charts 4. Worksheets with addition and subtraction problems 5. Interactive whiteboard or projector for displaying problems 6. Counters or small objects for hands-on activities **Introduction (10 minutes):** 1. Begin with a warm-up activity: Ask students simple addition and subtraction questions to engage them and activate prior knowledge. 2. Explain the lesson objectives and what students will be learning today. 3. Reinforce the importance of place value in understanding addition and subtraction. **Direct Instruction (15 minutes):** 1. On the whiteboard, demonstrate adding two-digit numbers with no regrouping (e.g., 34 + 21). 2. Break down the process: - Add the ones: 4 + 1 = 5 - Add the tens: 3 + 2 = 5 - Combine to get the answer: 55 3. Demonstrate adding two-digit numbers with regrouping (e.g., 47 + 35). - Add the ones: 7 + 5 = 12 (write down 2, carry over 1). - Add the tens including the carryover: 4 + 3 + 1 = 8 - Combine to get the answer: 82 4. Use base ten blocks or a place value chart to visually demonstrate the regrouping process. **Guided Practice (15 minutes):** 1. Give students a few addition problems to solve using the method demonstrated. 2. Circulate the room, offering support and guidance as needed. 3. Ask students to share their answers and explain their thought process. **Direct Instruction - Subtraction (10 minutes):** 1. On the whiteboard, demonstrate subtracting two-digit numbers with no regrouping (e.g., 56 - 23). - Subtract the ones: 6 - 3 = 3 - Subtract the tens: 5 - 2 = 3 - Combine to get the answer: 33 2. Demonstrate subtracting two-digit numbers with regrouping (e.g., 52 - 27). - Break down the process: - Subtract the ones: 2 - 7 (borrow 1 from the tens) - Regroup: 12 - 7 = 5 - Subtract the tens: 4 - 2 = 2 - Combine to get the answer: 25 3. Use base ten blocks or place value charts to show the regrouping process visually. **Guided Practice - Subtraction (10 minutes):** 1. Provide students with subtraction problems to solve. 2. Circulate the classroom to offer assistance and ensure that the students are practising correctly. 3. Ask students to explain their process to a partner or to the class as a whole. **Independent Practice (10 minutes):** 1. Hand out worksheets with a mix of addition and subtraction problems for students to complete independently. 2. Encourage students to use base ten blocks or place value charts if they need help. **Conclusion (10 minutes):** 1. Review the key points of the lesson. 2. Discuss any challenging problems students encountered and solve them together as a class. 3. Praise students for their efforts and highlight any improvements or successful strategies noticed during the lesson. **Homework:** Distribute a set of addition and subtraction word problems involving two-digit numbers for students to complete at home. Encourage students to show their working-out clearly. **Assessment:** Monitor students during guided and independent practice to assess their understanding. Review their worksheets and homework for accuracy and comprehension. Provide feedback and additional support as needed.