Learning Intention: Students will be able to add 2 digit numbers with sums less than 20.

Lesson Plan: Objectives: 1. Students will be able to add two digit numbers with sums less than 20. 2. Students will be able to work collaboratively to solve math problems.

Materials: -Whiteboard -Markers -Worksheets

Procedure: 1. Show of hands: Ask the students how many can add two digit numbers with sums less than 20. 2. Introduction: Explain the concept of adding two digit numbers, emphasizing the importance of starting on the right side and carrying 1, if needed. 3. Pair Work: Ask the students to get into pairs and solve some problems written on the whiteboard. 4. Sharing: Ask each pairs to tell the class their solution. 5. Group Discussion: Invite the students to discuss, in their pairs, why their answers are correct. Encourage them to explain their reasoning. 6. Individual practice: Give the students a worksheet to practice adding two digit numbers with sums less than 20. 7. Formative Assessment: Ask the students to solve another couple of problems on the whiteboard and evaluate as an individual.

Follow-Up: Ask the students to complete some related questions from the workbook.