Learning Intention: To develop the understanding and skills required for column addition, including number bonds, regrouping, and identifying mistakes.

Success Criteria: 1. I can accurately add two or more numbers using column addition. 2. I can identify and correct mistakes in column addition. 3. I can explain the concept of regrouping in column addition.

Introduction (10 minutes): 1. Begin the lesson by reviewing the concept of addition and its importance in everyday life. 2. Introduce the learning intention and success criteria to the students. 3. Explain that today’s lesson will focus on column addition, which is a method used to add numbers vertically.

Activity 1: Number Bonds (15 minutes): 1. Divide the class into pairs or small groups. 2. Provide each group with a set of number cards (e.g., 0-9). 3. Instruct the students to create number bonds for a given number (e.g., 10, 20, 30) using the number cards. 4. Encourage the students to discuss and explain their number bonds to their group members. 5. Facilitate a class discussion to share and compare different number bonds.

Activity 2: Regrouping (20 minutes): 1. Distribute a worksheet with column addition problems to each student. 2. Model the process of regrouping by solving a problem on the board. 3. Instruct the students to solve the remaining problems independently, using the regrouping method. 4. Circulate the classroom to provide support and guidance as needed. 5. After completing the worksheet, ask the students to share their answers and explain their regrouping process.

Activity 3: Finding the Mistake (20 minutes): 1. Set up a carousel activity with different column addition problems posted around the classroom. 2. Divide the class into small groups and assign each group to a specific problem. 3. Instruct the groups to analyze the problem, identify any mistakes, and correct them. 4. After a set amount of time, rotate the groups to the next problem until each group has analyzed all the problems. 5. Facilitate a class discussion to share the mistakes found and the correct solutions.

Conclusion (5 minutes): 1. Recap the learning intention and success criteria with the students. 2. Ask the students to reflect on their understanding of column addition and the skills they have developed. 3. Provide feedback and praise for their efforts during the lesson. 4. Assign a follow-up task or homework to reinforce the concepts learned in class.