1. Introduction to Biology Day 2 1.Attendance 2.Example experiment 3.Design your own

2. Scientific Method Terms: Control: Experimental Setup that does not change Experiment: a scientific procedure undertaken to make a discovery, test a hypothesis, or demonstrate a known fact. Hypothesis: An educated guess or prediction Variable: A characteristic of an experiment that can be changed Constant: A characteristic of an experiment that remains the same Independent Variable: The characteristic that the experimenter controls Dependent Variable: The characteristic that experimenter measures afterwards.

3. Example Bubble Lab: Question: Does the temperature of the room effect the average size of the bubbles? Prediction: If bubbles are blown in warmer rooms, they will be larger in size on average. Experiment: 1.Pour a small amount ~5mL of 100% bubble solution onto the top of a lab table in a cold room. 2.Dip the end of a straw into the same solution, and place one end of the straw in the puddle of bubble solution 3.Blow gently and slowly, making the bubble larger until it pops. 4.Measure the ring of the bubble. 5.Repeat in a medium temperature and warm room. 6.Record data, average the trials, and graph.

4. Analysis: (Make a graph here, and explain it) Bubbles blown in cold rooms reached an average size of 17cm, in medium rooms 21cm, and in warm room 15cm. Conclusion (does this match your prediction?) Our prediction that warmer rooms would produce larger bubbles was not supported by our data. ColdMediumWarm Trial 117cm20cm15cm Trial 218cm21cm14cm Trial 316cm22cm16cm Average17cm21cm15cm Data

5. 1.Question 2. What are your: Control, Hypothesis, Variable, Constant(s), Independent Variable, Dependent Variable 3.Experimental Design (needs to be clear enough for anyone to follow) 1.Step 1 2.Step 2 3.Step 3 4.Step 4 5.Step 5 4.Data (organized into a table) 5.Analysis (Graph and explanation of graph) 6.Conclusion (do your results match your hypothesis? Why do you think that is?) Everything needs to be written using complete sentences Will be turned in for a grade – so make it neat, orderly, and legible. All group members names need to be on it.

6. I will return your write-up tomorrow – we will make posters showing your results from the day 1 experiment and your own experiment then.

7. Poster Day 1 Experiment 1.Question 2.Hypothesis 3.Experimental Design steps 4.Data/Results 5.Analysis/Graph 6.Conclusion Your Experiment 1.Question 2.Hypothesis 3.Experimental Design steps 4.Data/Results 5.Analysis/Graph 6.Conclusion

8. Day 3, 9/5/2013 1.Attendance 2.Carry out your own experiment 3.Record Data 4.Complete your posters

9. Poster Day 1 Experiment 1.Question 2.Hypothesis 3.Experimental Design steps 4.Data/Results 5.Analysis/Graph 6.Conclusion Your Experiment 1.Question 2.Hypothesis 3.Experimental Design steps 4.Data/Results 5.Analysis/Graph 6.Conclusion