1. Scientific Method

2. Steps in the Scientific Method
Problem/Observation
Hypothesis
Procedure/Experiment
Data Collection
Conclusion
Retest

3. Scientific Method lab Problem:Does double stuff Oreo cookie really have double the stuff?
Determine this using the scientific method process
Complete the given worksheet and staple in your notebook
On the left side of your notebook: write, draw, color a full page advertisement of your favorite Oreo cookie
 Convince people why it is the best
4. Present this in form of a poster using the colored paper provided

4. Problema: ¿Dobla la galleta de Oreo de la materia realmente tener doble la materia?
1.Determine esto usando el proceso del método científico
2. Termine la hoja de trabajo dada y sujétela con grapa en su cuaderno
3. En el lado izquierdo de su cuaderno:
escriba, dibuje, coloree un anuncio de la página llena de su
 preferido de la galleta de Oreo convencen a gente porqué es el mejor
4. Presente esto en forma de un cartel usando el papel coloreado proporcionado

5. Triple beam balance
Graduated cylinder
Ruler
Beaker
Tell us what you need; we will provide

6. Write one effect of the hurricane on living things in your agenda
Bell warm up
Write one effect of the hurricane on living things in your agenda

7. Scientific Method

8. Steps in the Scientific Method
Problem/Observation
Hypothesis
Procedure/Experiment
Data Collection
Conclusion
Retest

9. Observations Gathered through your senses
A scientist notices something in their natural world

10. Observations
An example of an observation might be noticing that many salamanders near a pond have curved, not straight, tails

11. Hypothesis A suggested solution to the problem. Must be testable
Sometimes written as If…Then… statements
Predicts an outcome

12. Hypothesis
An example of a hypothesis might be that the salamanders have curved tails due to a pollutant in the moist soil where they live.

13. A procedure to test the hypothesis.
Experiment
A procedure to test the hypothesis.

14. Variable – factor in the experiment that is being tested

15. A good or “valid” experiment will only have ONE variable!

16. Controls and Variables

17. Scientific Experiments Follow Rules
An experimenter changes one factor and observes or measures what happens.

18. The Control Variable
The experimenter makes a special effort to keep other factors constant so that they will not effect the outcome.
Those factors are called control variables.

19. What is the Purpose of a Control?
Controls are NOT being tested
Controls are used for COMPARISON

20. Other Variables
The factor that is changed is known as the independent variable.
The factor that is measured or observed is called the dependent variable.
DRY MIX (Breathing rate depends on Temp
Breathing rate dependent
Temp independent

21. Example of Controls & Variables
For example, suppose you want to figure out the fastest route to walk home from school.
You will try several different routes and time how long it takes you to get home by each one.
Since you are only interested in finding a route that is fastest for you, you will do the walking yourself.

22. What are the Variables in Your Experiment?
Varying the route is the independent variable
The time it takes is the dependent variable
Keeping the same walker throughout makes the walker a control variable.

23. One more thing… it is best to make several trials with each independent variable.

24. Valid Experiments

25. Remember: To be a Valid Experiment:
Two groups are required --- the control & experimental groups
There should be only one variable

26. Data Results of the experiment
May be quantitative (numbers) or qualitative

27. Data
Must be organized
Can be organized into charts, tables, or graphs

28. Dependent (Responding)
DRY MIX DDEPENDENT VARIABLE R RESPONDING VARIABLE YAXIS M MANIPULATED
IINDEPENDENT VARIABLE XX- AXIS
Dependent (Responding)
Independent (manipulated)

29. DRY MIX D—DEPENDENT VARIABLE R– RESPONDING VARIABLE Y—Y-AXIS M–- MANIPULATED I--INDEPENDENT VARIABLE X—X- AXIS

30. Conclusion
The answer to the hypothesis based on the data obtained from the experiment

31. In order to verify the results, experiments must be retested.

32. Review

33. Solving a Problem 1)Identify a Problem
2) State Observations about the problem
3) Form a Hypothesis about the problem (if…then…)
4) Design an Experiment to test the hypothesis
5) Collect Data
6) Form a Conclusion
7) Retest

34. Fill in the parts of the Scientific method flowchart
State the problem

35. Analyze data THE SCIENTIFIC METHOD State the problem Modify hypothesis
Gather information
Form a hypothesis
Repeat several times
Test the hypothesis
Analyze data
Draw conclusions
Hypothesis
supported
Hypothesis
not supported

36. Practice Draw a flow chart of the steps of the scientific method
Insert imaginary data in your flowchart
Describe to the class

37. 1.Draw a flow chart of the steps of the scientific method
2.Insert imaginary data in your flowchart 3.Describe to the class
THE SCIENTIFIC METHOD
State the problem