1. What variable do you (the scientist) change during an experiment? 2. What variable is changed because of the first variable?

Transcription

1 1. What variable do you (the scientist) change during an experiment? 2. What variable is changed because of the first variable?

2 Logistics Make sure you are studying 20 minutes of reading increases your comprehension

3 Gru thinks that a special juice will increase the productivity of minions. He creates two groups of 50 workers and assigns each group the same task (stapling a set of papers). Group A is given the special juice. Group B is not given the special juice. After an hour, Group A made 1,587 stacks, Group B made 2,113 stacks. What should Gru s conclusion be?

4 Gru thinks that a special juice will increase the productivity of minions. He creates two groups of 50 workers and assigns each group the same task (stapling a set of papers). Group A is given the special juice. Group B is not given the special juice. After an hour, Group A made 1,587 stacks, Group B made 2,113 stacks. What should Gru s conclusion be?

5 Gru thinks that a special juice will increase the productivity of minions. He creates two groups of 50 workers and assigns each group the same task (stapling a set of papers). Group A is given the special juice. Group B is not given the special juice. After an hour, Group A made 1,587 stacks, Group B made 2,113 stacks. What should Gru s conclusion be?

6 Gru thinks that a special juice will increase the productivity of minions. He creates two groups of 50 workers and assigns each group the same task (stapling a set of papers). Group A is given the special juice. Group B is not given the special juice. After an hour, Group A made 1,587 stacks, Group B made 2,113 stacks. What should Gru s conclusion be?

7 Shaggy notices that his shower is covered in a strange green slime. Scooby tells him that coconut juice will get rid of the green slime. Shaggy decides to try this by spraying half of the shower with coconut juice. He sprays the other half of the shower with water. After 3 days of there is no change in the green slime on either side of the shower. What should Shaggy s conclusion be?

8 Shaggy notices that his shower is covered in a strange green slime. Scooby tells him that coconut juice will get rid of the green slime. Shaggy decides to try this by spraying half of the shower with coconut juice. He sprays the other half of the shower with water. After 3 days of there is no change in the green slime on either side of the shower. What should Shaggy s conclusion be?

9 Shaggy notices that his shower is covered in a strange green slime. Scooby tells him that coconut juice will get rid of the green slime. Shaggy decides to try this by spraying half of the shower with coconut juice. He sprays the other half of the shower with water. After 3 days of there is no change in the green slime on either side of the shower. What should Shaggy s conclusion be?

10 Shaggy notices that his shower is covered in a strange green slime. Scooby tells him that coconut juice will get rid of the green slime. Shaggy decides to try this by spraying half of the shower with coconut juice. He sprays the other half of the shower with water. After 3 days of there is no change in the green slime on either side of the shower. What should Shaggy s conclusion be?

11 Jerry believes that mice exposed to radio-waves will become extra strong. He puts 10 mice near a radio for 5 hours and compared these to 10 mice that were not exposed. His test required the mice to push a brick out of the way of their food. 8 out of 10 of the radio-waved mice were able to push the brick away. 7 out of 10 of the unexposed mice were able to do the same. What should Jerry s conclusion be?

12 Jerry believes that mice exposed to radio-waves will become extra strong. He puts 10 mice near a radio for 5 hours and compared these to 10 mice that were not exposed. His test required the mice to push a brick out of the way of their food. 8 out of 10 of the radio-waved mice were able to push the brick away. 7 out of 10 of the unexposed mice were able to do the same. What should Jerry s conclusion be?

13 Jerry believes that mice exposed to radio-waves will become extra strong. He puts 10 mice near a radio for 5 hours and compared these to 10 mice that were not exposed. His test required the mice to push a brick out of the way of their food. 8 out of 10 of the radio-waved mice were able to push the brick away. 7 out of 10 of the unexposed mice were able to do the same. What should Jerry s conclusion be?

14 Jerry believes that mice exposed to radio-waves will become extra strong. He puts 10 mice near a radio for 5 hours and compared these to 10 mice that were not exposed. His test required the mice to push a brick out of the way of their food. 8 out of 10 of the radio-waved mice were able to push the brick away. 7 out of 10 of the unexposed mice were able to do the same. What should Jerry s conclusion be?

15 Sheep Dash

16 Make sure your friend is still your friend Sheep Dash

17 Sheep Dash Every person needs their own blank sheet of paper (or leave it in your notebook)

18 Sheep Dash Each person needs to complete their own first set of trials (own control data) After each partner does this you will design an experiment to improve your reaction time

19 Sheep Dash Write an experimental design Write a hypothesis Include MV, RV, 3 CV, and indicate what your control group was Write what makes your experiment reliable and valid

20 1. Pre-trials Sheep Dash 2. Copy lab format 3. Complete lab design (on whiteboard) 4. Get your lab checked off BEFORE you re-test 5. Re-test with MV

21 Sheep Dash Experiment format: Question: Hypothesis: MV: RV: CV: CV: CV: Control: Reliability: Validity: Data Tables: Analysis: (Tomorrow) Conclusions: (Tomorrow)

22 Sheep Dash - Analysis 1. Create a graph of you and your partner s data. 2. Did each person s reaction time increase or decrease with the addition of the MV? 3. Get checked off.

23 Curiosity