Lesson Plan for Year 4 - Mathematics - Addition and Subtraction (four-digit numbers)

**Lesson Plan: Addition and Subtraction (Four-Digit Numbers) for Year 4** **Objective:** By the end of the lesson, students will: 1. Understand and apply the place value concept to numbers up to 9,999. 2. Accurately perform addition and subtraction operations on four-digit numbers. 3. Solve real-life word problems involving four-digit addition and subtraction. **Materials Needed:** - Whiteboard and markers - Number chart (1-10,000) - Base ten blocks - Worksheets with practice problems - Calculators (for checking work) - Real-life scenario cards (e.g., shopping receipts, distance traveled) - Math journals **Lesson Duration:** 1 hour --- **Lesson Structure:** **1. Warm-Up (10 minutes):** - Begin with a quick review of place value using a number chart. - Discuss how digits change value based on their position (thousands, hundreds, tens, and ones). - Play a quick place value game where students are given a four-digit number and asked to identify the value of each digit. **2. Introduction (10 minutes):** - Introduce the day’s objectives: adding and subtracting four-digit numbers. - Provide examples on the whiteboard and demonstrate how to set up the problems vertically. - Discuss the importance of lining up numbers by place value before adding or subtracting. **3. Guided Practice (15 minutes):** - Invite students to participate in solving a few addition and subtraction problems on the board with teacher guidance. - Use base ten blocks to visually demonstrate the process of addition and subtraction, particularly focusing on carrying over and borrowing. - Have students practice with a partner on a couple of problems, using base ten blocks if necessary. **4. Independent Practice (15 minutes):** - Distribute worksheets with a mix of addition and subtraction problems involving four-digit numbers. - Walk around the class, offering help and ensuring students understand the procedures. - Allow students to use calculators to check their answers but emphasize the importance of doing the calculations manually first. **5. Real-Life Application (10 minutes):** - Distribute real-life scenario cards that involve addition or subtraction of four-digit numbers (e.g., calculating total cost of items purchased, finding the difference between distances traveled). - Let students write down the math problem from their scenario and solve it in their math journals. - Discuss a few examples as a class and highlight different strategies used to solve the problems. **6. Closing (5 minutes):** - Review the key points of the lesson: place value significance, lining up numbers, carrying over, and borrowing. - Ask a few students to share what they found most challenging and how they overcame it. - Offer a couple of challenging problems for homework to reinforce the day’s learning. **Assessment:** - Observe student participation during guided practice. - Review and provide feedback on the worksheets and journal entries. - Use a short quiz the next day focusing on addition and subtraction of four-digit numbers to gauge retention. **Differentiation:** - Provide additional manipulatives and visual aids for students who need extra support. - Offer more complex problems or additional real-life scenarios for advanced students. - Assign peer mentors for students who may struggle with the concepts. **Follow-Up:** - Reinforce the concepts regularly with quick daily practice problems. - Encourage students to discuss any real-life instances where they encounter four-digit addition or subtraction outside of class. --- This lesson plan ensures that all students are engaged, supported, and challenged appropriately while building a strong foundational understanding of four-digit addition and subtraction.