1. DO NOW “General opinion's starting to make out that we live in a world of hatred and greed, but I don't see that. It seems to me that love is everywhere. Often, it's not particularly dignified or newsworthy, but it's always there - fathers and sons, mothers and daughters, husbands and wives, boyfriends, girlfriends, old friends. When the planes hit the Twin Towers, as far as I know, none of the phone calls from the people on board were messages of hate or revenge - they were all messages of L O V E.” On the Index Card, Write 1. Your Name 2. Do you have a working computer and internet at home? 3. A song you could listen to for the rest of your life and never get sick of 4. Where you want to be after high school? 5. The colleges you want to apply to 6. What do you want to be when you grow up 7. What would you like to be doing 10 years from now

2. DO NOW In your lab table, determine the steps of the scientific method

4. 1. Observation Get Curious or Notice a problem Ex. Students that say hello and goodbye to teachers tend to score better on tests

5. 2. Experimental Hypothesis Must be testable and falsifiable FORMAT: “If …., then …., because….” Ex. If students say, “Have a Great Day” everyday when they leave the classroom, then they will score 80- 100% on tests, because their positive attitude will increase scores.

6. 2a. Null Hypothesis States that the Results are Random The “skeptic” hypothesis Ex. There is no relationship between student greetings and test scores.

7. 3. Plan Experiment Be able to have 50-100 trials Realistically, 500+

8. C ONTROLLED E XPERIMENT Control Group The unmanipulated group used as a comparison Ex. Students say nothing to teacher Experimental Group The group used to test the hypothesis Ex. Students say “Have a Great Day!” 3a. Make it a Controlled Experiment

9. 3b. Determine Variables Independent Variable (IDV): critical factor being tested Ex. Saying “Have a Great Day!” Dependent Variable (DV): measurement of the critical factor, must be numerical. Ex. Test Scores TO FIGURE OUT VARIABLES BY USING THE SENTENCE : “The Effect of IDV on DV” (Also good for making a Great Lab Report Title!)

10. 4. Collect Data QUANTIFY: use numbers to prove hypothesis Ex. For both Experimental & Control Group, record all test scores for 50 days. CONTROLEXPERIMENTAL Test 16070 Test 280 Test 35090 Test 46092 Test 57580 Test 67084

11. 5. Analyze Data Determine if there is a trend in the data CONTROLEXPERIMENTAL Test 16070 Test 280 Test 35090 Test 46092 Test 57580 Test 67084 AVERAGE65.882.6 82.6 – 65.8 = 16.8

12. 6. Create Conclusion Reject or Accept Hypothesis/Null Hypothesis Ex. My hypothesis was correct because students that greeted the teacher with “Have a Great Day!” score an average of 16.8points higher on tests. The Null Hypothesis was incorrect.

13. 7. Peer Review & Repeat!

14. Theory Rigorously tested, well established facts & principles used to make predictions

15. TERMS Experimental Hypothesis & its format Null Hypothesis Control Group Experimental Group Independent Variable (IDV) Dependent Variable (DV) Quantify Theory

16. DO NOW You want to see if the “magnetic bracelets” actually help improve people’s balance. 1. State your Experimental and Null hypothesis 2. What is the Independent Variable? 3. What is the Dependent Variable? 4. How can you make this a controlled experiment? http://www.youtube.com/wa tch?v=mv_NK_qSgfU