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Experiments

Experiments. Investigating the Scientific Method. Cut/Paste Activity . Cut out each scenario. Glue into your notebooks (in any order). Leave lines to write on between each scenario based on the table below. Scientific Method. We use the scientific method every day – in our REAL lives…

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Experiments

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  1. Experiments Investigating the Scientific Method

  2. Cut/Paste Activity • Cut out each scenario. Glue into your notebooks (in any order). Leave lines to write on between each scenario based on the table below.

  3. Scientific Method • We use the scientific method every day – in our REAL lives… • Cleaning our clothes • Car repairs • Home repairs (Fixing a plumbing leak) • Gardening • Cooking (What tastes good, what doesn’t, how to combine items, how long to cook)

  4. Scientific Method • Do you try a whole bunch of things all at once? • Or do you try one thing at a time, in a systematic way? • Do you remember the ways that worked? • How about the ways that did not work? • Do you pass on that information to others?

  5. Scientific Method • These things are all the Scientific Method – but now we are going to put SCIENTIFIC terms to each one of the steps we already do in our lives. • And we are going to learn how to identify them.

  6. Variables • Control • “No change” • What you compare your test to • Independent Variable • “I” change it, “I” control it • “I” manipulate it • Dependent Variable • Responds to what was changed • Depends on what was changed

  7. Identifying Controls and Variables • Homer Simpson: • 1. Control Group: • Water (no change group) • 2. Independent Variable: • Coconut Juice (use it or not) • 3. Dependent Variable: • Slime (Is it still there? Did it respond?) • 4. Conclusion: • Coconut juice did not remove the slime from the shower.

  8. Identifying Controls and Variables • Smithers • 1. Control Group: • Group B (no change group) • 2. Independent Variable: • Super Juice (Did they have it or not?) • 3. Dependent Variable: • Amount of work completed (Production) • 4. Conclusion: • Super Juice DID NOT increase productivity. Group A: Super Juice 1,587 stacks Group B: Control 2,113 stacks

  9. Identifying Controls and Variables • Lisa Simpson • 1. Control Group: • No Rogooti (no change group) • 2. Independent Variable: • Use/Not use Rogooti (Manipulated variable) • 3. Dependent Variable: • Amount of hair growth (Responding variable) • 4. How would you do the experiment?

  10. Identifying Controls and Variables • Bart Simpson • 1. Control Group: • Non-microwaved mice • 2. Independent Variable: • Microwaving (how long, yes or no) • 3. Dependent Variable: • Strength of Mice • 4. Conclusion: • Inconclusive • 5. How could this experiment be improved? Mouse Strength 8 7 Non-Micro Mice Micro Mice

  11. Identifying Controls and Variables • Krusty • 1. Control: • Group A (Original powder) • 2. Independent Variable: • Itching powder (New versus Old) • 3. Dependent Variable: • How long they itched for (What results are we looking for?) • 4. Does the data support the advertisement claims? • Yes AND No… why? • 5. How could you improve this experiment?

  12. Controlled Experiments • How is an experiment controlled? • How does one scientist take another scientists work and expand upon it? • Open books to page 9

  13. Review of Experiments

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