Math 9

Unit 2 Powers and Exponent Laws

Lesson 921 What Is a Power?

Focus

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

TEXT Page 52

Read/Work through the  Focus  section at the top of page 52 in  your textbook.

Watch

Video Tutorial

Investigate

Investigate an idea or problem, with a partner if possible.
The investigation provides the background for the ideas presented in the lesson.

TEXT Page 52

Read/Work through the  Investigate  section on Page 52 in your textbook.

You may not have a partner to work with.  
No worries!  
I will provide you with examples in the video.  
You can view an example, PAUSE the video, work through the activity,  then RESUME the video to check your work.

Grid Paper / Online cubes

You may not have tiles or cubes to work with.

You can easily do this activity using GRID PAPER

Here are links to some different kinds of grid paper (and you can find lots of websites online that will provide this as well)
(Use the link to open the page, then download the file to your computer, print it, etc.)

Square Grid  LINK

Isometric Grid  LINK

Isometric Grid tool  LINK
https://www.nctm.org/Classroom-Resources/Illuminations/Interactives/Isometric-Drawing-Tool/

Demonstrations

BE SURE to try the Investigation YOURSELF FIRST!
The following two demonstrations will allow you to work with the ideas of the Investigation Interactively.
(If you need some help with these, check  my Video Tutorial)

Squares

Cubes

Watch

How to use the grid paper and/or the online isometric tool to do the Investigation  LINK

Video Tutorial

Connect

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

TEXT Page 53

Read/Work through the  Connect  section on Page 53 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

Examples

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

Example 1  Writing Powers

TEXT Page 53

Work through Example 1 on Page 53 in your textbook.

Watch

Video Tutorial

Example 2  Evaluating Powers

TEXT Page 54

Work through Example 2 on Page 54 in your textbook.

Watch

Video Tutorial

Example 3  Evaluating Expressions Involving Negative Signs

TEXT Page 54

Work through Example 3 on Page 54 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

Discuss the Ideas invites you to talk about the math.
If possible share your thoughts/ideas/answers with another person.
If you can help them understand, then you likely have good understanding yourself.

Check questions require basic understanding of the ideas of the  lesson.

Apply questions will require you to dig deeper for a solution.

Take It Further questions offer enrichment and extension.

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 3", "Question 4", "Question 5"}, {"Question 6", "Question 7", "Question 8", "Question 9", "Question 10"}, {"Question 11", "Question 12", "Question 13", "Question 14", "Question 15"}, {"Question 16", "Question 17", "Question 18", "Question 19", "Question 20"}, {"Question 21", "Question 22", "Question 23", "Question 24", "Question 25"}})