Objectives:

1. Students will be able to add two-digit numbers and find the sum within 20.
2. Students will be able to explain their process for adding two-digit numbers.

Materials:

• Paper
• Pencils
• Math worksheet

Lesson Plan:

1. Begin the lesson by introducing the topic, stating the learning intention, and reviewing the materials needed (5 minutes).

2. Introduce the concept of addition with an example: Show the students an equation such as 18 + 5 = ? and explain how to add the numbers. Ask the students to explain the process (10 minutes).

3. Pass out the math worksheet with two-digit addition equations and have the students solve them (15 minutes). Monitor the students’ individual progress and provide assistance whenever needed.

4. Ask the students about the strategy they used for solving the equations, and ask for volunteers to explain their processes on the board (10 minutes).

5. Summarize the lesson by reviewing the learning intention, and address any questions the students may have (5 minutes).