Transcript Lesson 2 and 3 for 11-4

“Day F”
Wednesday: Nov. 4, 2015
7:57 - 8:45
Exploratory
8:47 - 9:35
Social Studies
9:37 - 10:25
English
10:30 – 11:03
11:05 - 12:03
LUNCH
locker
(1st
Lunch)
12:05 - 12:54
Math Express
Science
12:56 - 1:44
1:46 - 2:30
Math
Exploratory
Today’s Agenda
11/4/15
ACTIVATOR:
1. Homework is out on the corner of your desk,
copy down tonight’s homework.
3. Activator: Take out your math packet
and notebook. In your notebook put today’s
date in the corner, and Activator on the first line.
Copy and Answer:
For every 3 girls, there are 4 boys. There are
21 children in the class. How many boys
are there?
November 4, 2015
[Day F]
•I will be able to create multiple ratios from
a context in which more than two quantities
are given to complete pg. 5 of my packet.
•I will also be able to use tape
diagrams to solve problems when
the part-to part ratio is given and the
value of one of quantities is given to
complete pg. 8 of my packet.
6.RP.A.1
6.RP.A.3
Exercise 1 pg. 4 (2 mins.)
Come up with two examples of
ratio relationships that are
interesting to you.
• Read and study the description of the
data in the chart on pg. 4.
• Answer the exploratory challenge
problems on pgs. 4 and 5
Are the ratios 2:5 and 5:2 the same? Why or why not?
Write a one-sentence story problem about a ratio.
Equivalent ratio
Ratios that
have the same
value
Ex. 4:7 is
equivalent to
12:21
Exercise 2 (7 min.):
Lets represent this ratio in a
table.
The length of Shanni’s
Ribbon
The length of Mel’s
Ribbon
(in inches)
(in inches)
7
14
21
3
6
9
We use a tape diagram to represent the ratio
of the lengths of ribbon. Let’s create one. 
Tape Diagram (Bar Model)
Exercise 3:
(a) Mason and Laney ran laps to train for the
long-distance running team. The ratio of the
number of laps Mason ran to the number of
laps Laney ran was 2 to 3. If Mason ran 4
miles, how far did Laney run?
Exercise 3 :
(b) If Laney ran 930 meters, how far did
Mason run? Draw a tape diagram to
determine how you found the answer.
Exercise 3 :
(c) What ratios can we say are
equivalent
to 2:3?
4:6 and 620:930
Exercise 4 :
Josie took a long multiple-choice, end-of-year vocabulary test. The ratio of the
number of problems Josie got incorrect to the number of problems she got
correct is 2:9.
(a) If Josie missed 8 questions, how many did she get correct? Draw a
tape diagram to demonstrate how you found the answer.
Exercise 4 :
(b) If Josie missed 20 questions, how many did she get correct? Draw
a tape diagram to demonstrate how you found the answer.
(c) What ratios can we say are equivalent to 2:9?
8:36 and 20:90
(d) Come up with another possible ratio of the number Josie got
incorrect to the number she got correct.
(e) How did you find the numbers?
(f) Describe how to create equivalent ratios.
Multiply both numbers of the ratio by the same number.
EXIT TICKET:
write the Answers in your TTG page
Pam and her brother both open savings account. Each
began with $0. For every $2 that Pam saves in her
account, her brother saves $5 in his account.
If Pam has $40 in her account, how much money does her
brother have in his account? Use a tape diagram to
support your answer.
HOMEWORK: Lesson 3: Ratios
Problem Set #1-4 (page S.11)
In your agenda please copy
tonight’s homework
• Math:
– Lesson 3: Ratios Problem Set #1-4 (page S.11)