1. Scientific Method – Series of Steps

2. Scientific Method 1. Problem/Question 2. Observation/Research
3. Hypothesis
4. Experiment
5. Collect and Analyze data
6. Conclusion
7. Report the Results
8. Repeat the experiment

3. 1. Problem This is a question that the experiment is asking Example:
Why does my breath smell in the morning?

4. Observation/Research
Make observations and do research
Examples:
Research about teeth, bacteria, and oral hygiene

5. Hypothesis Needs to be in a IF THEN statement Example:
IF a person brushes and flosses their teeth twice a day, THEN their breath will not smell.

6. Hypothesis
IF a person brushes and flosses their teeth twice a day (what you’re changing in the experiment), THEN their breath will not smell (what you think will be affected).

7. EXPERIMENT
It has 2 groups : the control group and the experimental group.
The control group remains the same
The experimental group has one variable changed

8. Control
Experimental
Students will brush their teeth “normally,” twice a day
Remains the same
Students will brush and floss their teeth twice a day
We’ve changed one variable

9. Independent Variable
The variable that YOU CHANGE is called the independent variable
The experimental group receives the independent variable

10. Dependent Variable
The dependent variable is what’s affected by the independent variable

11. What is the independent variable in our experiment?
IF a person brushes and flosses their teeth twice a day, THEN their breath will not smell.

12. What is the dependent variable in our experiment?
IF a person brushes and flosses their teeth twice a day, THEN their breath will not smell.

13. After the experiment you will…..
5. Collect and Analyze data
6. Make a Conclusion
7. Report the Results
8. Repeat the experiment

14. What will always make an experiment better
Having a larger sample size (ex: more people)
Repeating the experiment
Having an equal number of males to females
Increasing the number of trials