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 Go online for more! connectED.mcgraw-hill.com Course 3 www.mheonline.com connectED.mcgraw-hill.com • 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.
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