# Teaching the Number Line - Lesson and Tips (CVI)

Note: This is a guide to develop your own lessons, unit, and ideas with CVI adaptations as needed. Use it as a jumping off point.

## Objectives

• Students will be able to point to numbers on a number line1-20.
• Students will be able to do basic addition on a number line.
• Students will be able to do basic subtraction on the number line.

## Materials

• Flashcards
• Whiteboard
• Number line to 20
• Black background (I use black cardstock)

Note: With Sadie the number line came about when it was introduced in class and I found it to be a great tool that was a little more “big kid” friendly over manipulatives and also it was easier than having the manipulatives move when we count them.

CVI parents have told me that rote memorization of basic facts was key, but I also believe that they must also know what those memorized facts mean. IT TAKES A LOT OF TIME but it’s worth it in the long run. We build on this for our entire math life.

## Procedure

See my video on the number line.
I introduced the number line formally after about a year of using manipulatives with flash cards.

• Point to numbers on the number line. Make sure to always start with the pointer on zero before we move it for each problem
• After we have practiced finding numbers on the number line and have been successful (this could take minutes to weeks), introduce basic addition: 3 + 2 =
• Use the same words over and over again to avoid confusion, “Starting on zero, move the 3 and then count on 2 more because 3+2=”
• Use verbal and physical cues at first to ensure they are moving it correctly
• Work only on addition up to10 till mastered with verbal cues
• Start subtraction on the number line after there has been consistent success with basic addition and a subtraction lesson has already been introduced using the flashcards and manipulatives