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# Scientific method

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### Scientific method

1. 1. Scientific Method<br />
2. 2. Quick Quiz<br />
3. 3. What is a hypothesis?<br />1.<br />
4. 4. What is the first thing that must happen in the scientific method problem solving process?<br />2.<br />
5. 5. What is the one big thing that all experiments must do?<br />3.<br />
6. 6. What are the results of your experiment are collectively called?<br />4.<br />
7. 7. What is the purpose of the conclusion and why is it important?<br />5.<br />
8. 8. Two scientific tools used to analyze the results of your experiment are?<br />6.<br />
9. 9. What three things must be present in a well written hypothesis?<br />7.<br />
10. 10. Finished<br />
11. 11. Set up the dancing raisins<br />For 1 minute observe your setup<br />Now for 1 minute REALLY make observations<br />Share them with your group<br />Observations & The Dancing Raisins<br />
12. 12. When a scientist wants to learn about something, they usually start with several questions<br />Your job is to write down at least 3 different questions about the Dancing Raisins experiment you observed in class that might be interesting to test.<br />Problem Statement & the D.R.<br />[QUESTION]<br />
13. 13. What makes a good problem statement?<br />It cannot be answered yes or no<br />Does not contain the word “best” or a form of the word “best”. <br />The answer to the Problem Statement has measurable results which can be graphed. <br />If the answer to the question is known without experimentation, because it is quite obvious, then a new Problem Statement (question) is needed.<br />Problem Statement & the D.R.<br />[QUESTION]<br />
14. 14. Some examples of good PS<br />Does the height of an incline affect the speed of an object?<br />Does the diameter of a disc affect its speed down an incline?<br />Does the height of a bean plant determine how many beans the plant will produce?<br />How does the number of breaths affect the distance traveled by a rocket balloon?<br />Problem Statement & the D.R.<br />[QUESTION]<br />
15. 15. A scientific explanation for a set of observations that can be tested.<br />A.K.A – a testable explanation for observations<br />Hypothesis<br />
16. 16. Choose one of your problem statements.<br />Write a hypothesis that tests your question. Use “If, then, Because…” format.<br />If then because <br />First blank = Independent Variable (IV)<br />Second blank = Dependent Variable (DV)<br />Hypothesis and the D.R.<br />
17. 17. Problem Statement:<br />How many bubbles does it take to float a raisin?<br />Now you create a proper hypothesis.<br />Samples:<br />If we add bubbles one at a time, then the raisin will float when the count reaches 20 because the bubbles will balance the density and buoyancy of the raisin.<br />If there is less than 20 bubbles on the raisin, then the it will not float because the bubbles increase the buoyancy of the raisin.<br />Formative Assessment<br />
18. 18. By yourself, I want you to write step-by-step directions of how to make a peanut butter sandwich.<br />Be sure to be as detailed as you can!<br />Write them so that another student or adult could pick up your directions and create the sandwich just like you would want.<br />Writing directions<br />
19. 19. Egg Float Activity<br />Observe the egg setup.<br />What might be a possible problem statement?<br />What might be a potential hypothesis?<br />If we add 6 teaspoons of salt to the water, then the egg will float because the water will be more dense than the egg.<br />Making graphs & Charts<br />[COLLECT & ANALYZING DATA]<br />
20. 20. What data do we want to collect? [what are we measuring?]<br />How are we going to organize it?<br />Now that we have it, what will we do with it?<br />Making graphs & Charts<br />[COLLECT & ANALYZING DATA]<br />
21. 21. 6 sentence minimum conclusion structure<br />#1 Rewrite your hypothesis [Use IF, THEN, BECAUSE format]<br />#2 State whether the data did you got supported your hypothesis OR disproved your hypothesis.<br />#3 Explain your data and what happened in your experiment. <br />#4 What do you now conclude about the way things work? [The data I got shows …{explain concept}…..]<br />#5 What are you now wondering? [What questions do you have now that you are done]<br />#6. If you conducted this experiment again, what would you change? [looking at your design and results where were the sources of potential errors, what could have been done better, what could be expanded upon, etc.]<br />Writing a Conclusion<br />
22. 22. Problem Statement (Question)<br />Hypothesis<br />Experiment<br />Collect and Analyze Data<br />Write a Conclusion<br />Repeat & Publish Results<br />The whole story<br />
23. 23. What is Engineering?<br />
24. 24. The engineering design cycle<br />