BASIC MATH ADDITION LESSON:
ADDING THREE WHOLE NUMBERS

ADDING THREE WHOLE NUMBERS LESSON PLAN

Teacher Materials:

• chalkboard and chalk
• Adding Three Numbers Worksheet

Lesson:

Write the problem 2 + 3 on the board, ask students to solve the problem. (5)

Now write 2 + 3 + 2 on the board. Ask students how this problem is the same as the problem they just solved. (2 + 3)

Explain that when you are adding three numbers you break the problem into two parts. You add the first two numbers (2 + 3) then add the next number to that answer (5 + 2). So the answer is 7.

Write the problem 1 + 4 + 3 on the board. Show students again how to break the problem into 2 parts. Adding the first part then adding the third number to that answer.

Write 4 + 2 + 5 on the board. Ask students what they should do first. (add 4 + 2) Then ask students what they should do next. (add 6 + 5) So the answer is 11.

Repeat as many times as the teacher deems necessary.

Assessment:
Use the worksheet to evaluate whether students understand the concept.

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