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Experimental Method

Experimental Method. Writing up an Experiment. A lot like writing up a cooking recipe:. Hypothesis. Remember: The Hypothesis is based on what is already known, so it is an application of a known theory to test an unknown factor. Hypothesis Materials.

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Experimental Method

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  1. Experimental Method

  2. Writing up an Experiment • A lot like writing up a cooking recipe:

  3. Hypothesis Remember: The Hypothesis is based on what is already known, so it is an application of a known theory to test an unknown factor.

  4. Hypothesis Materials

  5. MaterialsHypothesis Method

  6. MaterialsHypothesis Method Results

  7. MaterialsHypothesis Method Results Conclusion

  8. Your Perfect Sandwich... • Write down the ingredients of your perfect sandwich. Make sure that you include the quantities of each ingredient. • Once you have completed the ingredients list: write down, step-by-by and in order, how you would make the sandwich. • Things to consider: would someone else who has never made this sandwich be able to replicate your prefect sandwich just by following your instructions?

  9. Motion Workshop • Form into groups of 3. Each person will be assigned a task: • 1. following others’ instructions • 2. the instructor • 3. Observer

  10. Motion Workshop (Cont’d) • What to do: • Person (1) will leave the classroom. • While person (1) is out, Person (2) and (3) will figure out a sequence of actions (at least 3 moves) for Person (1) to follow. Once this is decided, Person (1) will return to the classroom. • Person (2) will then instruct Person (1) on the sequence of actions, in order. • Person (3) observes this and takes notes on what instructions worked well and what didn’t. • Then switch roles and repeat. Students should all have a go at each role.

  11. Experimental Controls • Experimental controls are factors in an experiment that stay the same. • These are factors that you have to take into consideration to NOT affect experimental results. • For example: Light availability or intensity, oxygen availability, temperature,etc.

  12. Experimental Variables • Experimental variables are factors that you are trying to test the effect of. • These are the factors that you are using (and varying) to see if there is a difference in its affecting the outcome of what you are testing. • For example: varying light and/or oxygen availability to see if it affects the rate of photosynthesis, varying the amount of enzymes to see if it affects the rate of reaction in an animal.

  13. Control or Variable? • Copy the following into your book and place them as an experimental control or variable, and why: • A conical flask • The colour green • Oxygen availability • Bunsen Burner • Light intensity • Air flow • Water availability • Bunsen Burner flame

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