Lesson #1 title: PART 1 = Introduction to and Exploration of Percent
Date:
THROUGH-LINE: Order-discovering
Percent (%) makes ‘sense’ when it is expressed in equivalences (example: 99% =
99
100
= 0.99 = 99 out of 100).
OUTCOMES:
1.
2.
3.
4.
5.
Explain that ‘percent’ means “out of 100”.
Use pictorial representations to illustrate a given percent.
Record the percent displayed in a given pictorial representation.
Express a given percent in three ways: as a fraction, in words, as a decimal hundredths.
Express a given pictorial or concrete representation as a fraction or decimal; e.g., 15 shaded squares on
15
a hundredths grid can be expressed as 0.15 or
or 15%.
100
MATERIAL NEEDED: highlighters, pencil, blue pen
Example #1: (obtained from Eduguide6 p.27)
When might 2% be a lot and when might 2% only be a small amount?
2% would be a lot when
2% would be a small amount when
Example #2: (obtained from Eduguide6 p.27)
Use this hundredths grid. Colour 20% pink, 0.16 blue, 24 out of 100 is
yellow, and the rest of this grid using green.
Express each coloured amount in FOUR ways:
PINK
BLUE
YELLOW
GREEN
percent
fraction
decimal
words
Example #3: If TCS had 100 students in the grades 4 to 6 choir, then it is possible that 82%
of them could be girls while 28% of them could be boys?
YES or
NO?
Explain your choice:
BOTTOM LINE: What does the word PERCENT mean?
L1(2)
YOUR TURN 
#1: (obtained from Eduguide6 p.27)
Express the COLOURED amount in four ways:
Percent
Fraction
Decimal
Words
Express the amount NOT coloured as
Percent =
Decimal =
#2: Convert EACH of these values as percentages, fractions , words AND decimals:
5%=
23 % =
0.40 =
100 % =
1 out of 100 =
𝟖
𝟏𝟎𝟎
=
#3: (obtained from Eduguide6 p.27)
Kara bought 100 paperclips. 39% were green and she said that 71% were not green. Is this possible?
L1(3)
#4: (obtained from Eduguide6 p.40)
Where in your experience have you used or seen ‘percent’?
1.
2.
3.
#5: Express each shaded section as indicated.
Fraction (light grey) =
% (light grey) =
Fraction (dark grey) =
% (dark grey) =
#6: (obtained from Eduguide6 p.27)
A city bus is 55% full. Is this more or less than half full? Explain.
#7: Write each as a decimal and a fraction and as a %.
1.
5.
2.
37
3.
4.
6. fifteen hundredths 7. 3 tenths
8. nineteen hundredths
10.
12. 34 hundredths
100
9. 8 hundredths
87
11. seventy-seven
hundredths
100
13. one hundredth
14. 0.21
15. 0.63