Math 20-3

Chapter 1 Slope and Rate of Change

Lesson 1.2 Grade, Angle of Elevation, and Distance

Formula page

I expect that you will be able to use a formula page for this class,  but that will be determined by your teacher.

Your teacher may have a formula page they expect you to use.

Below is a link to the formula page I will use (at least for now!) when I’m doing questions for this class.

This may change, depending on feedback from your teacher.

I encourage you to download this page and print it so you have it handy when you are doing math.

LINK
https://drive.google.com/file/d/1RP1ih45uxqdYk0HP8_fpw2zrb4Z-K6iM/view?usp=sharing

Explore the Math Pages 25 - 26

Read/Work through this section of your textbook.
These ideas will be developed in the examples

Video Tutorial  Road Grade

Video Tutorial  Calculating Grade

Video Tutorial   PITFALL!!   make sure units are the same!

Demonstration (Angle of Elevation)

More information on the connection between slope and the angle of elevation

You can explore the demonstration first if you like, or watch the video to get some ideas about what is happening here.

Video Tutorial  (Explore 4)

Demonstration (The Length of a slope)

The connection between slope and the length of the slope.

You can explore the demonstration first if you like, or watch the video to get some ideas about what is happening here.

Video Tutorial  (Explore 5)

Example 1  Page 27

Read the example problem and try to answer the question YOURSELF if you can.
Use the textbook solution or the Video Tutorial if you need help.

Video Tutorial

Example 2  Page 28

Read the example problem and try to answer the question YOURSELF if you can.
Use the textbook solution or the Video Tutorial if you need help.

Video Tutorial

Mental Math and Estimation   Page 28

Do your best to use mathematics in your head to solve this problem.
Use the Video Tutorial to check your answer or get help with the problem.

Video Tutorial

Example 3  Pages 29 - 30

Read the example problem and try to answer the question YOURSELF if you can.
Use the textbook solution or the Video Tutorial if you need help.

Video Tutorial

Build Your Skills Pages 30 - 32

Doing Practice Problems

The problems in this section reinforce the math presented in this lesson, and give you opportunities to build on and practice your skills.

•	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!

•	EXTEND YOUR THINKING problems will be more challenging than the others.

Notes

Question 7,    In this video I’ve done the same question, but the numbers are just slightly different.
If you want to be able to check your work with the video, watch the first bit of the video to use the same numbers as I did.

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", }})