Math 7

Unit 2 Integers

Lesson 2.3 Adding Integers on a Number Line

Integer Tiles

If you need to use them,  below is the link to a virtual integer tiles document you can use for this unit.

LINK  (integer tiles document)

Number Lines

This lesson uses number lines to model the addition of integers.

Lots of places on the internet where you can work with number lines.

HERE is a PDF file with several number lines that you can download and PRINT to use with this lesson.

Be sure to actually DO some number line additions, don’t just watch!

Focus

The FOCUS section introduces the main concept that will be covered in the lesson.

Add integers using number lines.

TEXT Page 60

Read/Work through the  Focus  section at the top of page 60 in  your textbook.

Demonstrations

You can explore the ideas of this lesson using the demonstrations below.
Totally optional, but it might help to do more in a short period of time.
But... you should also be sure you are ready to do this on paper too!

Video Tutorial

Two Arrows

One Arrow

Vertical number line

This works,  but it doesn’t look as nice.   That was because the space needed vertically  changes the proportions a bit.
It still shows the idea.....

Thermometer

A bit more complicated here, you can set the start  temperature,  then change the temperature (up or down)

Explore

Explore an idea or problem.
The exploration provides the background for the ideas presented in the lesson.

TEXT Page 60

Read/Work through the  Explore  section on Page 60 in your textbook.

You can do this activity on your own.
Do your best to answer the questions, then watch the Video Tutorial for help or to check your answers.

You can choose any numbers you like to do this exploration, but... if you want to check your work with mine,  below are the examples that I used.

(+2) + (+5)

(-2) + (+5)

(-2) + (-5)

Watch

Video Tutorial

Connect

Connect summarizes the math in the lesson.
A presentation of ideas connected to the lesson focus.

TEXT Page 61

Read/Work through the  Connect  section on Page 61 in your textbook.

Even if you KNOW you are going to watch the video, READING this section is still important.

Getting the same information in multiple ways can help with understanding.

Watch

Video Tutorial

Example

The Example will give you TOOLS for solving problems, and also show you that there may be different ways to approach a question.

Example

TEXT Page 62

Work through the Example  on Page 62 in your textbook.

Watch

Video Tutorial

Practice Problems

Doing Practice Problems

Practice problems reinforce the math presented in this lesson.

•	Work through the practice problems for this lesson.
	These problems are for practice, you don’t need to hand them in!
	(your teacher may assign specific questions for you to complete)

•	Use the answers in the back of the book to CHECK YOUR WORK!

•	If you make a mistake, TRY TO FIX IT!

•	If you need help or want more information, view the video solutions provided.

•	If you still need more help,  CONTACT YOUR TEACHER!

Types of Practice Problems

Assessment Focus a question that gives a good example of the kind of question you would be expected to answer after completing the lesson

Take It Further questions offer enrichment and extension.

Notes

Question 3,    I didn’t do a video for this one.
You should do this question!!  But,  you’ve hopefully heard and seen several times that the order of an addition doesn’t change the answer.
This property is called the commutative property of addition.   eg.   (+2)+(+3)= (+3)+(+2)

Video Solution Links

Check your work for every problem you do!
If you make a mistake,  try to fix it!
Use the video solutions for more information.
If a problem still doesn’t make sense, ASK YOUR TEACHER FOR HELP!

({{"Question 1", "Question 2",  , "Question 4", "Question 5"}, {"Question 6", "Question 7", "Question 8", "Question 9", "Question 10"}, {"Question 11", , , , }})