Math 8

Unit 4 Measuring Prisms and Cylinders

Lesson 842    Creating Objects from Nets

Focus

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

TEXT Page 177

Read/Work through the  Focus  section at the top of page 177 in  your textbook.

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 177

Read/Work through the  Investigate  section on Page 177 in your textbook.

You may not have a partner to work with.  
No worries!  
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.

Here are links to files you can download and PRINT to do the investigation
Hexagonal
Octagonal
Pyramid

Watch

Video Tutorial

P.S.   in the video, I talk about the angle I needed to find to get the pyramid to work out.   It has a special name, it’s called the dihedral angle.
(you don’t need to know that!   but just in case you were interested....)

Connect

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

TEXT Page 178

Read/Work through the  Connect  section on Page 178 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

If you want to print the net and try this yourself,  HERE is a link to the file

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

TEXT Pages 178 - 179

Work through Example 1 on Pages 178 - 179  in your textbook.

Watch

Video Tutorial

Example 2

TEXT Page 179

Work through Example 2 on Page 179 in your textbook.

HERE is a link to a file you can print and use to try this yourself.
Not quite the same shape, but the same idea.

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.

Notes

Question 3,    If you actually want to DO the question,  HERE is a link to a file you can print and then cut out and fold.

Question 4,    If you actually want to DO the question,  HERE is a link to a file you can print and then cut out and fold.

Question 5,    If you actually want to DO the question,   HERE  is a link to a file you can print and then cut out and fold.

Question 6,    If you actually want to DO the question, HERE  is a link to a file you can print and then cut out and fold.

Question 8,    I am sure there would be LOTS of information on the net about soccer balls.  
I did a search and here is one site that shows the layers of a soccer ball and how the polygons are stitched together.   LINK

Question 12,      If you actually want to DO the question,  HERE  is a link to a file you can print and then cut out and fold.

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", , }})