1. The Scientific Method Pg. 15 Section 1-3

3. Control group- receives NO experimental treatment. Dependent variable-variable that is tested in an experiment. Independent variable- varied in a experiment. Theory-set of related hypotheses that have been tested and confirmed many times by many scientists. Hypothesis- explanation that might be true.

4. Scientific Method Group Handout

5. Significant Figures

6. 1.How many significant figures are there?  0.004045  12.02  0.25  0.00000025  0.20004

7. SI Units The measuring system in science is the SI, based on the metric system.

8. SI Units Count the ZEROS!

9. Get into Groups of 2-3

10. Directions: Design an experiment to answer the following questions. Identify a control group, dependent and independent variables, and possible outcomes or what type of data would be gathered. Be sure to use the scientific method for your experiment.

11. Group Experiments Group 1- Does Rogaine really improve hair growth? Group 2- Does the hormone estrogen increase the milk yield of dairy cows? Group 3- Does aspirin keep cut roses fresh longer? Group 4- Does the size of a fish tank determine how large a fish will grow? Group 5- Do wounds heal faster when they are covered by Band-Aids? Group 6- Do tanning beds cause skin cancer? Group 7- Which battery lasts longer, Energizer or Duracell?