1. Vocabulary and Proportions
Section 1.6

2. Note Slide - Vocabulary
 Variable – A letter that is used to represent a
number that is changing
 Constant – A number that does not change
 Expression – A series of operations, variables,
and constants (NO EQUAL SIGN)
 Equation - An expression that is set equal to
something

3. Video Slide
Watch the video on evaluating expressions
with varibles and copy the example in your
notes:
http://www.youtube.com/watch?v=SjSFKBNlRmo

4. Homework Slide
Evaluate the following expressions
when x= 6 and y = 4

5. Note Slide - Vocabulary
 Proportion – When two fractions are equal, they
form a proportion.
 When two rates are equal, they are
proportional

6. Video Slide
Watch the video on Equivalent Fractions
and copy the example in your notes:
http://www.youtube.com/watch?v=xnVO-zMq-KA

7. Homework Slide
20
?
4
3

14
?
2
1

56
?
8
7

15
?
5
3

Proportions – Equivalent Fractions:

8. Video Slide
Watch the video on Converting from a
Fraction to a Percent and copy the example
in your notes:
http://www.youtube.com/watch?v=lH6FRHs3tlI

9. Homework Slide
Converting from Fraction to Percent
(A percent is a proportion related to 100)
1. Write the process you use to convert a
percent to a fraction.
2. Convert to a percent20
13

10. Group Work
Remember to use complete sentences!
Look at page 39 of section 1.6
Do #8-15 as a group

11. Homework
 My Math Lab – Section 1.12
 Text Book Homework page 41 #1-13
 My Math Lab – Section 1.6