1. Scientific method

2. Scientific Method
The method you use for conducting scientific research/experiments.
Allows experiments to be duplicated and communicated uniformly.
Contains observation/research, hypothesis, prediction, experimentation, conclusion

3. Scientific Method Steps
Observation/Research – Gathering information on the topic of interest
Eg. I want to know which paper plane flies farther: one with wide wings or one with short wings. First I would gather facts/information about paper planes

4. Scientific Method Steps
Hypothesis – An educated guess. A suggested explanation for the answer you think you will find.
Eg 1. Paper planes with wider wings fly farther than paper planes with shorter wings
Can you think of another example of a hypothesis?

5. Scientific Method Steps
Prediction – what you think will happen.
Eg 1. The plane with wider wings will fly 1 meter farther than the plane with a shorter wing span.

6. Scientific Method Steps
Experiment – the tool you invent to answer the question
Must be reproducible
Must be quantifiable
Must keep all variables the same except for one.
Eg. An experiment was designed using one plane with a wing span of 5cm and another plane with a wing span of 10 cm. The ONLY difference between paper airplanes is the wing span. Eg they were both folded the same way and made of the same paper.

7. Scientific Method Steps
Conclusion – summary of the experiments results. You can not PROVE your hypothesis, you can only find results that support or refute the hypothesis.
Eg. “it was found that the plane with the wider wing span flew farther than the plane with the shorter wing span”

9. Theories and Laws
An observation is something that is witnessed and can be recorded, and a theory is an interpretation, or a possible explanation of why nature behaves in a particular way.
Remember that theories are human inventions.
Laws – have been proven. Ie. The conservation of mass – total mass of materials before and after the change is the same.
Law – tells what happens.
Theory – attempts to explain why it happens. ***Theories do not become Laws

10. Paper Airplane Experiment
Research/Observations – think about your knowledge on how planes fly and past times you’ve made paper airplanes.
Hypothesis – state your hypothesis. Eg. “planes with less weight fly farther distances”
Experiment – write down how you will test your hypothesis. Everyone will use distance flown as the measurement. Do 3 trials for each plane.
Once you finish this part, show it to me, and I will give you your paper to make the airplanes and conduct your experiment.
Analyze your data – “plane A flew 4.5 meters and plane B flew 3 meters”
Conclusion

11. Experiment Data Table Trial 1 Distance flown Trial 2 Trial 3 Plane A
Plane B