8th Grade Countdown to SBAC Week 1

Think Smart for the
Smarter Balanced Assessment
Scatter
Plots
Think Smart for the Smarter Balanced Assessment
Course 3
• Smarter Balanced Assessment Item Types
• Countdown to SBAC
• Chapter Tests in SBAC Format
• Chapter Performance Tasks, Rubrics,
and Student Work Samples
• Benchmark Tests with Performance Tasks
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Course 3
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• Question Analysis Charts
• Student Scoring Rubrics
• Technology-Enhanced Questions
• More Performance Tasks!
NAME
DATE
PERIOD
SCORE
Countdown: 1 Week
Juaquim planted wildflower seeds. He compared the
number of seeds he planted in each bed to the number
of plants that grew. 8.SP.1
Seeds Planted
100
300
500
800
900
Plants
50
200
400
650
800
1,000
Number of Plants
1.
800
600
400
200
x
Part A: Construct a scatter plot of the data.
2.
0
200 400 600 800 1,000
Part B: What pattern do you see in the data?
Number of Seeds Planted
The dance team started going to competitions in 2008. The graph
shows the number of trophies they have won every year. 8.SP.2
Think Smart for SBAC
Number of Trophies Won
Part A: Draw a line of best fit on the scatter plot.
Copyright © McGraw-Hill Education. Permission is granted to reproduce for classroom use.
y
16
14
12
10
8
6
4
2
0
y
On the actual test, you might
be asked to click buttons to
plot the line of best fit. In
this book, you will be asked
to draw the line on the
coordinate plane.
x
1 2 3 4 5 6 7 8
Years Since 2008
Part B: Write an equation of the line of best fit. How many trophies were
won in 2008? Predict how many trophies will be won in 2016. Justify your
answer.
Course 3 • Countdown • 1 Week
51
Course 3 • Countdown
200
50
Plants
400
500
650
800
800
900
Years Since 2008
1 2 3 4 5 6 7 8
x
A sample line is shown.
Sample answer: y = 2x + 2; 2 trophies
because it is the y-intercept which
represents 0 years since 2008; 18 trophies
won; 2016 is 8 years after 2008, so
substitute 8 for x in the equation and solve
for y.
x
200 400 600 800 1,000
SCORE
Course 3 • Countdown • 1 Week
52
5.
4.
3.
Work (joules)
20
18
16
14
12
10
8
6
4
2
0
y
False
25
31
56
11
33
44
No award
Total
Course 3 • Countdown • 1 Week
There were fewer high school students who did not win than
middle school students who did not win.
One-third of the middle school students win an award.
Half of the high school students win an award.
64% of the students do not win in the competition.
Part B: Select each conclusion that is valid
for the data.
Part A: Complete the two-way table.
High
School
Middle
School
Award
The base of the ladder with the extension is placed 15 feet
from the base of the building. It will reach no higher than the
original ladder, without the extension at 10 feet away.
Without the extension, the ladder will reach a window that is
24 feet above the ground.
With the extension, the ladder can reach a window that is
28 feet above the ground.
There are 100 students at a science fair
competition; 44 are middle school students.
Of the 36 students who win an award,
25 are in high school. 8.SP.4
True
64
100
36
Total
Distance (cm)
1 2 3 4 5 6 7 8 9 10
The base of a 25-foot ladder is positioned 10 feet from the bottom of the
building it leans against. An extension can be pulled out to make it a
30-foot ladder. Select whether each statement is true or false. Round
answers to the nearest foot. 8.G.7
0; When there is no movement, there is no
work being done.
Part B: What is the y-intercept? What does it represent?
3; For every 1 centimeter the object moves,
3 joules of work are required.
Part A: What is the slope of the line that models the data?
What does it represent?
Abay is calculating the work required to move an object
in a science lab. She records her data in a graph. 8.SP.3
26/11/14 12:22051-052_SBAC_A_C3_CD01_793945.indd
PM
52
51
On the actual test, you might
be asked to click buttons to
plot the line of best fit. In
this book, you will be asked
to draw the line on the
coordinate plane.
Think Smart for SBAC
Number of Seeds Planted
y
Part B: Write an equation of the line of best fit. How many trophies were
won in 2008? Predict how many trophies will be won in 2016. Justify your
answer.
0
16
14
12
10
8
6
4
2
y
Part A: Draw a line of best fit on the scatter plot.
0
200
400
600
800
1,000
PERIOD
The dance team started going to competitions in 2008. The graph
shows the number of trophies they have won every year. 8.SP.2
a strong, positive linear association
Part B: What pattern do you see in the data?
Part A: Construct a scatter plot of the data.
300
100
Seeds Planted
Juaquim planted wildflower seeds. He compared the
number of seeds he planted in each bed to the number
of plants that grew. 8.SP.1
DATE
Copyright © The McGraw-Hill Companies, Inc. Permission is granted to reproduce for classroom
Copyright © McGraw-Hill Education. Permission is granted to reproduce for classroom use.
051-052_SBAC_A_C3_CD01_793945.indd 51
2.
1.
Countdown: 1 Week
Number of Trophies Won
190
Number of Plants
NAME
x
26/11/14 12:22 PM
Countdown: 1 Week
Copyright © McGraw-Hill Education. Permission is granted to reproduce for classroom use.