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

### Year 4 Mathematics Lesson Plan: Addition and Subtraction (Four-Digit Numbers) **Lesson Duration**: 1 hour **Lesson Objectives**: - To understand and perform addition and subtraction with four-digit numbers. - To use different methods for solving addition and subtraction problems efficiently. - To develop problem-solving skills and logical thinking. **Materials Required**: - Whiteboard and markers - Worksheets with addition and subtraction problems - Place value charts - Number cards - Pencils and paper - Calculators (for checking answers) - Interactive whiteboard (if available) --- **1. Introduction (10 minutes)** *Instructor’s Activity:* - Greet the students and introduce the topic: Addition and Subtraction of four-digit numbers. - Quickly recapitulate the place value concepts (units, tens, hundreds, and thousands). *Student’s Activity:* - Participate in a quick discussion on place value. - Answer questions such as “What is the place value of 5 in 4,573?” --- **2. Main Lesson (40 minutes)** **Concept Explanation (10 minutes)** *Instructor’s Activity:* - Explain the steps involved in adding four-digit numbers, including carrying over. - Use place value charts and number cards to illustrate the concept. - Demonstrate subtraction, including borrowing, on the whiteboard. *Student’s Activity:* - Observe the steps carefully and ask questions if anything is unclear. - Look at the examples on the interactive whiteboard. **Guided Practice (15 minutes)** *Instructor’s Activity:* - Give out worksheets with a few guided problems. - Walk around the classroom to assist students as they work through the problems. *Student’s Activity:* - Work collaboratively or individually on the provided problems. - Practice addition problems such as: 1. 4,567 + 3,442 2. 2,345 + 1,678 - Practice subtraction problems such as: 1. 6,785 - 3,214 2. 8,123 - 2,968 **Independent Practice (15 minutes)** *Instructor’s Activity:* - Provide an additional set of problems for students to solve independently. - Ensure some problems require carrying over and borrowing, and include word problems for application. *Student’s Activity:* - Solve the problems independently. - Use calculators to check their answers after solving the problems manually. --- **3. Conclusion (10 minutes)** *Instructor’s Activity:* - Review a few problems on the whiteboard. - Discuss any mistakes and explain the correct methods. - Summarize the key concepts: carrying over in addition and borrowing in subtraction. *Student’s Activity:* - Share their answers and solutions. - Participate in a brief Q&A session to clarify any doubts. --- **Assessment**: - Evaluate the independent practice worksheets to gauge understanding. - Provide feedback and additional support where needed. **Homework**: - Assign a series of problems involving four-digit addition and subtraction for practice at home. - Include a couple of word problems to encourage critical thinking. **Extension Activities** (for advanced learners): - Introduce the concept of adding and subtracting larger numbers. - Provide challenging real-world problems that require multi-step solutions. --- **Reflection**: Post-lesson, reflect on the effectiveness of the strategies used and adjust future lesson plans to cater to the needs of the students based on their performance and feedback.