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VB.15c.399.1 | 3 girls wanted to see who could throw a ball the farthest. Each girl brought her favorite ball to the park. Ling brought her basketball, Diana brought her football, and Rachael brought her baseball. They made a line on the playground. They all had to throw the ball from that line. Ling took 2 steps up to the line and threw her basketball. Diana stood at the line and threw her football. Rachael got a running start and threw her baseball when she reached the line. Rachael threw her ball the farthest. Describe what the girls need to do to make the contest a controlled experiment (fair test). | All variables except the girl need to be held constant (controlled). The girls all need to throw the same ball and use the same launch technique. | Nobody get a running start and they all use the same ball to make it fair. | 0correct
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VB.15c.404.1 | 3 girls wanted to see who could throw a ball the farthest. Each girl brought her favorite ball to the park. Ling brought her basketball, Diana brought her football, and Rachael brought her baseball. They made a line on the playground. They all had to throw the ball from that line. Ling took 2 steps up to the line and threw her basketball. Diana stood at the line and threw her football. Rachael got a running start and threw her baseball when she reached the line. Rachael threw her ball the farthest. Describe what the girls need to do to make the contest a controlled experiment (fair test). | All variables except the girl need to be held constant (controlled). The girls all need to throw the same ball and use the same launch technique. | They need to throw the same kind of ball, they need to throw at the same place and they need to get the same speed. | 0correct
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VB.15c.407.1 | 3 girls wanted to see who could throw a ball the farthest. Each girl brought her favorite ball to the park. Ling brought her basketball, Diana brought her football, and Rachael brought her baseball. They made a line on the playground. They all had to throw the ball from that line. Ling took 2 steps up to the line and threw her basketball. Diana stood at the line and threw her football. Rachael got a running start and threw her baseball when she reached the line. Rachael threw her ball the farthest. Describe what the girls need to do to make the contest a controlled experiment (fair test). | All variables except the girl need to be held constant (controlled). The girls all need to throw the same ball and use the same launch technique. | They need the same kind of ball and with the same weight and to stand still when throwing the ball. | 1contradictory
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VB.15c.416.1 | 3 girls wanted to see who could throw a ball the farthest. Each girl brought her favorite ball to the park. Ling brought her basketball, Diana brought her football, and Rachael brought her baseball. They made a line on the playground. They all had to throw the ball from that line. Ling took 2 steps up to the line and threw her basketball. Diana stood at the line and threw her football. Rachael got a running start and threw her baseball when she reached the line. Rachael threw her ball the farthest. Describe what the girls need to do to make the contest a controlled experiment (fair test). | All variables except the girl need to be held constant (controlled). The girls all need to throw the same ball and use the same launch technique. | They need to have thrown it at the same place which they did they need one variable changed that could be different balls or the same ball but different size. | 1contradictory
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VB.15c.419.1 | 3 girls wanted to see who could throw a ball the farthest. Each girl brought her favorite ball to the park. Ling brought her basketball, Diana brought her football, and Rachael brought her baseball. They made a line on the playground. They all had to throw the ball from that line. Ling took 2 steps up to the line and threw her basketball. Diana stood at the line and threw her football. Rachael got a running start and threw her baseball when she reached the line. Rachael threw her ball the farthest. Describe what the girls need to do to make the contest a controlled experiment (fair test). | All variables except the girl need to be held constant (controlled). The girls all need to throw the same ball and use the same launch technique. | To make the balls the same thing so it is a fair game to play. Like a baseball, basketball or a football to throw. | 2partially_correct_incomplete
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VB.15c.423.1 | 3 girls wanted to see who could throw a ball the farthest. Each girl brought her favorite ball to the park. Ling brought her basketball, Diana brought her football, and Rachael brought her baseball. They made a line on the playground. They all had to throw the ball from that line. Ling took 2 steps up to the line and threw her basketball. Diana stood at the line and threw her football. Rachael got a running start and threw her baseball when she reached the line. Rachael threw her ball the farthest. Describe what the girls need to do to make the contest a controlled experiment (fair test). | All variables except the girl need to be held constant (controlled). The girls all need to throw the same ball and use the same launch technique. | Ling and Diana should change their experiments to a baseball because the baseball won. | 2partially_correct_incomplete
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VB.15c.432.1 | 3 girls wanted to see who could throw a ball the farthest. Each girl brought her favorite ball to the park. Ling brought her basketball, Diana brought her football, and Rachael brought her baseball. They made a line on the playground. They all had to throw the ball from that line. Ling took 2 steps up to the line and threw her basketball. Diana stood at the line and threw her football. Rachael got a running start and threw her baseball when she reached the line. Rachael threw her ball the farthest. Describe what the girls need to do to make the contest a controlled experiment (fair test). | All variables except the girl need to be held constant (controlled). The girls all need to throw the same ball and use the same launch technique. | To have the same ball and throw the same place. And the weight of the ball. And how hard you throw it. | 2partially_correct_incomplete
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VB.15c.440.1 | 3 girls wanted to see who could throw a ball the farthest. Each girl brought her favorite ball to the park. Ling brought her basketball, Diana brought her football, and Rachael brought her baseball. They made a line on the playground. They all had to throw the ball from that line. Ling took 2 steps up to the line and threw her basketball. Diana stood at the line and threw her football. Rachael got a running start and threw her baseball when she reached the line. Rachael threw her ball the farthest. Describe what the girls need to do to make the contest a controlled experiment (fair test). | All variables except the girl need to be held constant (controlled). The girls all need to throw the same ball and use the same launch technique. | The balls all need to be the same and they all have to stand and throw. | 0correct
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VB.15c.448.1 | 3 girls wanted to see who could throw a ball the farthest. Each girl brought her favorite ball to the park. Ling brought her basketball, Diana brought her football, and Rachael brought her baseball. They made a line on the playground. They all had to throw the ball from that line. Ling took 2 steps up to the line and threw her basketball. Diana stood at the line and threw her football. Rachael got a running start and threw her baseball when she reached the line. Rachael threw her ball the farthest. Describe what the girls need to do to make the contest a controlled experiment (fair test). | All variables except the girl need to be held constant (controlled). The girls all need to throw the same ball and use the same launch technique. | Make a line that is very straight. All use same ball. All stand at line. Throw at same time. Record data. | 2partially_correct_incomplete
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VB.15c.452.1 | 3 girls wanted to see who could throw a ball the farthest. Each girl brought her favorite ball to the park. Ling brought her basketball, Diana brought her football, and Rachael brought her baseball. They made a line on the playground. They all had to throw the ball from that line. Ling took 2 steps up to the line and threw her basketball. Diana stood at the line and threw her football. Rachael got a running start and threw her baseball when she reached the line. Rachael threw her ball the farthest. Describe what the girls need to do to make the contest a controlled experiment (fair test). | All variables except the girl need to be held constant (controlled). The girls all need to throw the same ball and use the same launch technique. | They need to use the same kind of balls and they need the same procedure of throwing. | 2partially_correct_incomplete
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VB.15c.462.1 | 3 girls wanted to see who could throw a ball the farthest. Each girl brought her favorite ball to the park. Ling brought her basketball, Diana brought her football, and Rachael brought her baseball. They made a line on the playground. They all had to throw the ball from that line. Ling took 2 steps up to the line and threw her basketball. Diana stood at the line and threw her football. Rachael got a running start and threw her baseball when she reached the line. Rachael threw her ball the farthest. Describe what the girls need to do to make the contest a controlled experiment (fair test). | All variables except the girl need to be held constant (controlled). The girls all need to throw the same ball and use the same launch technique. | Where they throw the ball, use the same ball, they all get a running start. | 0correct
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VB.15c.466.1 | 3 girls wanted to see who could throw a ball the farthest. Each girl brought her favorite ball to the park. Ling brought her basketball, Diana brought her football, and Rachael brought her baseball. They made a line on the playground. They all had to throw the ball from that line. Ling took 2 steps up to the line and threw her basketball. Diana stood at the line and threw her football. Rachael got a running start and threw her baseball when she reached the line. Rachael threw her ball the farthest. Describe what the girls need to do to make the contest a controlled experiment (fair test). | All variables except the girl need to be held constant (controlled). The girls all need to throw the same ball and use the same launch technique. | To make the contest a controlled experiment the girls need to take the same amount of steps. | 2partially_correct_incomplete
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VB.15c.475.1 | 3 girls wanted to see who could throw a ball the farthest. Each girl brought her favorite ball to the park. Ling brought her basketball, Diana brought her football, and Rachael brought her baseball. They made a line on the playground. They all had to throw the ball from that line. Ling took 2 steps up to the line and threw her basketball. Diana stood at the line and threw her football. Rachael got a running start and threw her baseball when she reached the line. Rachael threw her ball the farthest. Describe what the girls need to do to make the contest a controlled experiment (fair test). | All variables except the girl need to be held constant (controlled). The girls all need to throw the same ball and use the same launch technique. | The girls needed to change each variable at a time, like starting at the same position, all 3 of them, and the mass of the balls. | 2partially_correct_incomplete
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VB.15c.481.1 | 3 girls wanted to see who could throw a ball the farthest. Each girl brought her favorite ball to the park. Ling brought her basketball, Diana brought her football, and Rachael brought her baseball. They made a line on the playground. They all had to throw the ball from that line. Ling took 2 steps up to the line and threw her basketball. Diana stood at the line and threw her football. Rachael got a running start and threw her baseball when she reached the line. Rachael threw her ball the farthest. Describe what the girls need to do to make the contest a controlled experiment (fair test). | All variables except the girl need to be held constant (controlled). The girls all need to throw the same ball and use the same launch technique. | The girls have to have the same type of ball and also take the same amount of steps when they are throwing it. | 0correct
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VB.15c.486.1 | 3 girls wanted to see who could throw a ball the farthest. Each girl brought her favorite ball to the park. Ling brought her basketball, Diana brought her football, and Rachael brought her baseball. They made a line on the playground. They all had to throw the ball from that line. Ling took 2 steps up to the line and threw her basketball. Diana stood at the line and threw her football. Rachael got a running start and threw her baseball when she reached the line. Rachael threw her ball the farthest. Describe what the girls need to do to make the contest a controlled experiment (fair test). | All variables except the girl need to be held constant (controlled). The girls all need to throw the same ball and use the same launch technique. | They can just throw from the line and not run. | 2partially_correct_incomplete
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VB.15c.495.1 | 3 girls wanted to see who could throw a ball the farthest. Each girl brought her favorite ball to the park. Ling brought her basketball, Diana brought her football, and Rachael brought her baseball. They made a line on the playground. They all had to throw the ball from that line. Ling took 2 steps up to the line and threw her basketball. Diana stood at the line and threw her football. Rachael got a running start and threw her baseball when she reached the line. Rachael threw her ball the farthest. Describe what the girls need to do to make the contest a controlled experiment (fair test). | All variables except the girl need to be held constant (controlled). The girls all need to throw the same ball and use the same launch technique. | Use all of the same balls. | 2partially_correct_incomplete
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VB.15c.497.1 | 3 girls wanted to see who could throw a ball the farthest. Each girl brought her favorite ball to the park. Ling brought her basketball, Diana brought her football, and Rachael brought her baseball. They made a line on the playground. They all had to throw the ball from that line. Ling took 2 steps up to the line and threw her basketball. Diana stood at the line and threw her football. Rachael got a running start and threw her baseball when she reached the line. Rachael threw her ball the farthest. Describe what the girls need to do to make the contest a controlled experiment (fair test). | All variables except the girl need to be held constant (controlled). The girls all need to throw the same ball and use the same launch technique. | They have to have the same balls. They have to throw the ball in the same way. | 0correct
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VB.15c.503.1 | 3 girls wanted to see who could throw a ball the farthest. Each girl brought her favorite ball to the park. Ling brought her basketball, Diana brought her football, and Rachael brought her baseball. They made a line on the playground. They all had to throw the ball from that line. Ling took 2 steps up to the line and threw her basketball. Diana stood at the line and threw her football. Rachael got a running start and threw her baseball when she reached the line. Rachael threw her ball the farthest. Describe what the girls need to do to make the contest a controlled experiment (fair test). | All variables except the girl need to be held constant (controlled). The girls all need to throw the same ball and use the same launch technique. | First they all do the standard way then they throw the same ball and write then they do that again 2 times with the other balls then finally they write it and compare. | 2partially_correct_incomplete
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VB.15c.511.1 | 3 girls wanted to see who could throw a ball the farthest. Each girl brought her favorite ball to the park. Ling brought her basketball, Diana brought her football, and Rachael brought her baseball. They made a line on the playground. They all had to throw the ball from that line. Ling took 2 steps up to the line and threw her basketball. Diana stood at the line and threw her football. Rachael got a running start and threw her baseball when she reached the line. Rachael threw her ball the farthest. Describe what the girls need to do to make the contest a controlled experiment (fair test). | All variables except the girl need to be held constant (controlled). The girls all need to throw the same ball and use the same launch technique. | They needed to use their position. | 2partially_correct_incomplete
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VB.15c.523.1 | 3 girls wanted to see who could throw a ball the farthest. Each girl brought her favorite ball to the park. Ling brought her basketball, Diana brought her football, and Rachael brought her baseball. They made a line on the playground. They all had to throw the ball from that line. Ling took 2 steps up to the line and threw her basketball. Diana stood at the line and threw her football. Rachael got a running start and threw her baseball when she reached the line. Rachael threw her ball the farthest. Describe what the girls need to do to make the contest a controlled experiment (fair test). | All variables except the girl need to be held constant (controlled). The girls all need to throw the same ball and use the same launch technique. | They all have a ball and they all stand at the same place. | 2partially_correct_incomplete
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VB.15c.530.1 | 3 girls wanted to see who could throw a ball the farthest. Each girl brought her favorite ball to the park. Ling brought her basketball, Diana brought her football, and Rachael brought her baseball. They made a line on the playground. They all had to throw the ball from that line. Ling took 2 steps up to the line and threw her basketball. Diana stood at the line and threw her football. Rachael got a running start and threw her baseball when she reached the line. Rachael threw her ball the farthest. Describe what the girls need to do to make the contest a controlled experiment (fair test). | All variables except the girl need to be held constant (controlled). The girls all need to throw the same ball and use the same launch technique. | They should all stand at the line and throw. | 2partially_correct_incomplete
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VB.15c.533.1 | 3 girls wanted to see who could throw a ball the farthest. Each girl brought her favorite ball to the park. Ling brought her basketball, Diana brought her football, and Rachael brought her baseball. They made a line on the playground. They all had to throw the ball from that line. Ling took 2 steps up to the line and threw her basketball. Diana stood at the line and threw her football. Rachael got a running start and threw her baseball when she reached the line. Rachael threw her ball the farthest. Describe what the girls need to do to make the contest a controlled experiment (fair test). | All variables except the girl need to be held constant (controlled). The girls all need to throw the same ball and use the same launch technique. | Same ball and stand on the line. | 2partially_correct_incomplete
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VB.15c.535.1 | 3 girls wanted to see who could throw a ball the farthest. Each girl brought her favorite ball to the park. Ling brought her basketball, Diana brought her football, and Rachael brought her baseball. They made a line on the playground. They all had to throw the ball from that line. Ling took 2 steps up to the line and threw her basketball. Diana stood at the line and threw her football. Rachael got a running start and threw her baseball when she reached the line. Rachael threw her ball the farthest. Describe what the girls need to do to make the contest a controlled experiment (fair test). | All variables except the girl need to be held constant (controlled). The girls all need to throw the same ball and use the same launch technique. | The balls and the line that tells them to go. | 3irrelevant
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VB.15c.537.1 | 3 girls wanted to see who could throw a ball the farthest. Each girl brought her favorite ball to the park. Ling brought her basketball, Diana brought her football, and Rachael brought her baseball. They made a line on the playground. They all had to throw the ball from that line. Ling took 2 steps up to the line and threw her basketball. Diana stood at the line and threw her football. Rachael got a running start and threw her baseball when she reached the line. Rachael threw her ball the farthest. Describe what the girls need to do to make the contest a controlled experiment (fair test). | All variables except the girl need to be held constant (controlled). The girls all need to throw the same ball and use the same launch technique. | They had to throw their ball first at the same time. | 1contradictory
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VB.15c.539.1 | 3 girls wanted to see who could throw a ball the farthest. Each girl brought her favorite ball to the park. Ling brought her basketball, Diana brought her football, and Rachael brought her baseball. They made a line on the playground. They all had to throw the ball from that line. Ling took 2 steps up to the line and threw her basketball. Diana stood at the line and threw her football. Rachael got a running start and threw her baseball when she reached the line. Rachael threw her ball the farthest. Describe what the girls need to do to make the contest a controlled experiment (fair test). | All variables except the girl need to be held constant (controlled). The girls all need to throw the same ball and use the same launch technique. | They should all start in the line. | 2partially_correct_incomplete
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VB.15c.542.1 | 3 girls wanted to see who could throw a ball the farthest. Each girl brought her favorite ball to the park. Ling brought her basketball, Diana brought her football, and Rachael brought her baseball. They made a line on the playground. They all had to throw the ball from that line. Ling took 2 steps up to the line and threw her basketball. Diana stood at the line and threw her football. Rachael got a running start and threw her baseball when she reached the line. Rachael threw her ball the farthest. Describe what the girls need to do to make the contest a controlled experiment (fair test). | All variables except the girl need to be held constant (controlled). The girls all need to throw the same ball and use the same launch technique. | What the 3 girls need to do is stand straight and same sized ball. | 2partially_correct_incomplete
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VB.15c.545.1 | 3 girls wanted to see who could throw a ball the farthest. Each girl brought her favorite ball to the park. Ling brought her basketball, Diana brought her football, and Rachael brought her baseball. They made a line on the playground. They all had to throw the ball from that line. Ling took 2 steps up to the line and threw her basketball. Diana stood at the line and threw her football. Rachael got a running start and threw her baseball when she reached the line. Rachael threw her ball the farthest. Describe what the girls need to do to make the contest a controlled experiment (fair test). | All variables except the girl need to be held constant (controlled). The girls all need to throw the same ball and use the same launch technique. | Throw the ball at the same time. | 2partially_correct_incomplete
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VB.15c.626.1 | 3 girls wanted to see who could throw a ball the farthest. Each girl brought her favorite ball to the park. Ling brought her basketball, Diana brought her football, and Rachael brought her baseball. They made a line on the playground. They all had to throw the ball from that line. Ling took 2 steps up to the line and threw her basketball. Diana stood at the line and threw her football. Rachael got a running start and threw her baseball when she reached the line. Rachael threw her ball the farthest. Describe what the girls need to do to make the contest a controlled experiment (fair test). | All variables except the girl need to be held constant (controlled). The girls all need to throw the same ball and use the same launch technique. | Stay at the line, use one ball, everyone get a 2 step, throw. | 2partially_correct_incomplete
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VB.15c.634.1 | 3 girls wanted to see who could throw a ball the farthest. Each girl brought her favorite ball to the park. Ling brought her basketball, Diana brought her football, and Rachael brought her baseball. They made a line on the playground. They all had to throw the ball from that line. Ling took 2 steps up to the line and threw her basketball. Diana stood at the line and threw her football. Rachael got a running start and threw her baseball when she reached the line. Rachael threw her ball the farthest. Describe what the girls need to do to make the contest a controlled experiment (fair test). | All variables except the girl need to be held constant (controlled). The girls all need to throw the same ball and use the same launch technique. | Same sized balls. Take 2 steps then throw. | 1contradictory
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VB.15c.636.1 | 3 girls wanted to see who could throw a ball the farthest. Each girl brought her favorite ball to the park. Ling brought her basketball, Diana brought her football, and Rachael brought her baseball. They made a line on the playground. They all had to throw the ball from that line. Ling took 2 steps up to the line and threw her basketball. Diana stood at the line and threw her football. Rachael got a running start and threw her baseball when she reached the line. Rachael threw her ball the farthest. Describe what the girls need to do to make the contest a controlled experiment (fair test). | All variables except the girl need to be held constant (controlled). The girls all need to throw the same ball and use the same launch technique. | They all needed to have the same ball. | 2partially_correct_incomplete
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VB.15c.638.1 | 3 girls wanted to see who could throw a ball the farthest. Each girl brought her favorite ball to the park. Ling brought her basketball, Diana brought her football, and Rachael brought her baseball. They made a line on the playground. They all had to throw the ball from that line. Ling took 2 steps up to the line and threw her basketball. Diana stood at the line and threw her football. Rachael got a running start and threw her baseball when she reached the line. Rachael threw her ball the farthest. Describe what the girls need to do to make the contest a controlled experiment (fair test). | All variables except the girl need to be held constant (controlled). The girls all need to throw the same ball and use the same launch technique. | They should all use the same ball they should all take 2 steps. | 0correct
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VB.15c.639.1 | 3 girls wanted to see who could throw a ball the farthest. Each girl brought her favorite ball to the park. Ling brought her basketball, Diana brought her football, and Rachael brought her baseball. They made a line on the playground. They all had to throw the ball from that line. Ling took 2 steps up to the line and threw her basketball. Diana stood at the line and threw her football. Rachael got a running start and threw her baseball when she reached the line. Rachael threw her ball the farthest. Describe what the girls need to do to make the contest a controlled experiment (fair test). | All variables except the girl need to be held constant (controlled). The girls all need to throw the same ball and use the same launch technique. | Do not take any steps, have the same kind of ball. | 2partially_correct_incomplete
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VB.15c.643.1 | 3 girls wanted to see who could throw a ball the farthest. Each girl brought her favorite ball to the park. Ling brought her basketball, Diana brought her football, and Rachael brought her baseball. They made a line on the playground. They all had to throw the ball from that line. Ling took 2 steps up to the line and threw her basketball. Diana stood at the line and threw her football. Rachael got a running start and threw her baseball when she reached the line. Rachael threw her ball the farthest. Describe what the girls need to do to make the contest a controlled experiment (fair test). | All variables except the girl need to be held constant (controlled). The girls all need to throw the same ball and use the same launch technique. | Starting in the same place. Using the same kind of ball. | 2partially_correct_incomplete
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VB.29.381.1 | When conducting a controlled experiment, why do you use a standard? | A standard is used for comparison to determine how changing one variable changes the results. | You have a standard because if you do not it will not be controlled. | 3irrelevant
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VB.29.384.1 | When conducting a controlled experiment, why do you use a standard? | A standard is used for comparison to determine how changing one variable changes the results. | So that you can see the results of an experiment before a variable is changed so you can compare. | 0correct
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VB.29.388.1 | When conducting a controlled experiment, why do you use a standard? | A standard is used for comparison to determine how changing one variable changes the results. | You use a standard so you will not make a mistake and so you can compare it to differences. | 2partially_correct_incomplete
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VB.29.394.1 | When conducting a controlled experiment, why do you use a standard? | A standard is used for comparison to determine how changing one variable changes the results. | You start with a standard so you can compare your standard data to your data when you change a variable. | 0correct
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VB.29.397.1 | When conducting a controlled experiment, why do you use a standard? | A standard is used for comparison to determine how changing one variable changes the results. | So you can get the closest answer to the question. | 3irrelevant
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VB.29.399.1 | When conducting a controlled experiment, why do you use a standard? | A standard is used for comparison to determine how changing one variable changes the results. | So you can record and change variables to get a difference. | 1contradictory
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VB.29.404.1 | When conducting a controlled experiment, why do you use a standard? | A standard is used for comparison to determine how changing one variable changes the results. | So that control your experiment without changing more than one variable. | 0correct
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VB.29.407.1 | When conducting a controlled experiment, why do you use a standard? | A standard is used for comparison to determine how changing one variable changes the results. | To keep the variables controlled. | 3irrelevant
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VB.29.416.1 | When conducting a controlled experiment, why do you use a standard? | A standard is used for comparison to determine how changing one variable changes the results. | You use a standard so you can tell what happened in a controlled experiment and because you can change one variable at a time. | 0correct
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VB.29.419.1 | When conducting a controlled experiment, why do you use a standard? | A standard is used for comparison to determine how changing one variable changes the results. | You would use a standard to change any variables than just one variable that can be changed. | 0correct
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VB.29.423.1 | When conducting a controlled experiment, why do you use a standard? | A standard is used for comparison to determine how changing one variable changes the results. | You use a standard to control your procedure, like if you get it wrong you can see what you did. | 2partially_correct_incomplete
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VB.29.440.1 | When conducting a controlled experiment, why do you use a standard? | A standard is used for comparison to determine how changing one variable changes the results. | To compare the new experiment with the standard. | 2partially_correct_incomplete
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VB.29.444.1 | When conducting a controlled experiment, why do you use a standard? | A standard is used for comparison to determine how changing one variable changes the results. | You use a standard because when you change something which is a variable. That when you change it, you know when you did before. | 0correct
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VB.29.448.1 | When conducting a controlled experiment, why do you use a standard? | A standard is used for comparison to determine how changing one variable changes the results. | You use a standard because without a standard, you can change it. | 2partially_correct_incomplete
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VB.29.452.1 | When conducting a controlled experiment, why do you use a standard? | A standard is used for comparison to determine how changing one variable changes the results. | So you can see what you did after you do the other trials, it makes a controlled experiment to look back on when you change one variable at a time. | 2partially_correct_incomplete
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VB.29.454.1 | When conducting a controlled experiment, why do you use a standard? | A standard is used for comparison to determine how changing one variable changes the results. | You use a standard to see if you can try a less amount each time you do an experiment. | 0correct
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VB.29.458.1 | When conducting a controlled experiment, why do you use a standard? | A standard is used for comparison to determine how changing one variable changes the results. | You use a standard so that you can test it and compare with your standard. And compare with your variable. | 2partially_correct_incomplete
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VB.29.466.1 | When conducting a controlled experiment, why do you use a standard? | A standard is used for comparison to determine how changing one variable changes the results. | When conducting a controlled experiment you use a standard because you compare your other results to see if it is accurate. | 0correct
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VB.29.475.1 | When conducting a controlled experiment, why do you use a standard? | A standard is used for comparison to determine how changing one variable changes the results. | You use a standard so you can change the variable if needed in an experiment and you can also change the variable at a time. | 2partially_correct_incomplete
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VB.29.477.1 | When conducting a controlled experiment, why do you use a standard? | A standard is used for comparison to determine how changing one variable changes the results. | You use a standard because that what you know before the experiment and the standard helps you a lot during the experiment. | 3irrelevant
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VB.29.481.1 | When conducting a controlled experiment, why do you use a standard? | A standard is used for comparison to determine how changing one variable changes the results. | In a controlled experiment you use a standard because when you are testing something else you will have to compare your answers. That is where a standard comes in. | 2partially_correct_incomplete
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VB.29.486.1 | When conducting a controlled experiment, why do you use a standard? | A standard is used for comparison to determine how changing one variable changes the results. | To compare your answers. | 3irrelevant
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VB.29.489.1 | When conducting a controlled experiment, why do you use a standard? | A standard is used for comparison to determine how changing one variable changes the results. | We use a standard first because we could know how it went then we could use the score it went and test it again. | 2partially_correct_incomplete
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VB.29.495.1 | When conducting a controlled experiment, why do you use a standard? | A standard is used for comparison to determine how changing one variable changes the results. | You use a standard is to know what you will do and how it will happen. | 3irrelevant
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VB.29.497.1 | When conducting a controlled experiment, why do you use a standard? | A standard is used for comparison to determine how changing one variable changes the results. | So when you change variables you can compare you standard and the other ones. | 2partially_correct_incomplete
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VB.29.501.1 | When conducting a controlled experiment, why do you use a standard? | A standard is used for comparison to determine how changing one variable changes the results. | So you can test the standard and can switch one variable to make it proven. | 2partially_correct_incomplete
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VB.29.503.1 | When conducting a controlled experiment, why do you use a standard? | A standard is used for comparison to determine how changing one variable changes the results. | Because you want to know what is the regular way and to compare the first way. | 2partially_correct_incomplete
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VB.29.523.1 | When conducting a controlled experiment, why do you use a standard? | A standard is used for comparison to determine how changing one variable changes the results. | So you can compare your answers. | 2partially_correct_incomplete
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VB.29.525.1 | When conducting a controlled experiment, why do you use a standard? | A standard is used for comparison to determine how changing one variable changes the results. | To compare the experiment with the standard one. | 2partially_correct_incomplete
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VB.29.530.1 | When conducting a controlled experiment, why do you use a standard? | A standard is used for comparison to determine how changing one variable changes the results. | So when you are done you could compare. | 2partially_correct_incomplete
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VB.29.533.1 | When conducting a controlled experiment, why do you use a standard? | A standard is used for comparison to determine how changing one variable changes the results. | So you compare at the end of the experiment. | 2partially_correct_incomplete
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VB.29.537.1 | When conducting a controlled experiment, why do you use a standard? | A standard is used for comparison to determine how changing one variable changes the results. | To see if the standard might be faster than the other. | 2partially_correct_incomplete
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VB.29.542.1 | When conducting a controlled experiment, why do you use a standard? | A standard is used for comparison to determine how changing one variable changes the results. | Because you can compare the results. | 2partially_correct_incomplete
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VB.29.626.1 | When conducting a controlled experiment, why do you use a standard? | A standard is used for comparison to determine how changing one variable changes the results. | To help control the controlled experiment. | 3irrelevant
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VB.29.628.1 | When conducting a controlled experiment, why do you use a standard? | A standard is used for comparison to determine how changing one variable changes the results. | To control any experiment. | 3irrelevant
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VB.29.634.1 | When conducting a controlled experiment, why do you use a standard? | A standard is used for comparison to determine how changing one variable changes the results. | Because without a standard you will not know the steps. | 3irrelevant
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