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 a common misunderstanding about number lines?

• They must be drawn vertically.

• They can only show even numbers.

• They must always start at zero.

• They are only useful for subtraction.

When using a number line for addition, why is it beneficial to start at the larger number?

• It reduces the number of jumps needed.

• It makes the line shorter.

• It allows for subtraction instead.

• It avoids negative numbers.

In the example of 7 plus 23, what is the final sum when using a number line?

• 30

• 35

• 32

• 28

How can breaking numbers into smaller parts help in addition on a number line?

• It eliminates the need for a number line.

• It allows for multiplication.

• It reduces the chance of errors.

• It makes the process faster.

In the example with Kevin's oranges, what is the total number of oranges after addition?

• 30

• 28

• 34

• 32