Using the Number Line to Add: Building and Solving Addition Problems

This lesson teaches how to use a number line to add two numbers. It explains the concept of a number line, how to construct it, and how to apply it to solve addition problems. The lesson also covers advanced techniques like using groups of 10 for easier addition and provides practical examples to illustrate these concepts. By the end of the lesson, students will understand how to effectively use number lines for addition.

What is the purpose of a number line in addition?

Why is it not always necessary to start a number line at 0?

How can you effectively start a number line for the addition problem 7 plus 23?

Explain how breaking numbers into smaller parts can help in addition.

What is the final sum when Kevin adds 12 oranges and 18 more?