1. Scientific Method A series of steps scientists use to investigate & answer questions about the world.

2. Observations Gather information Gather information Use your 5 senses Use your 5 senses

3. Think about this situation: You observe that in the morning when your baby brother cries, your puppy starts to howl. Later in the day, a policeman outside your house blows a whistle and your puppy howls again. Then the next day, your sister practices her piano lesson and as she plays high-pitched notes, your puppy starts howling again.

4. How can you explain your puppy howling? What evidence could you use to support your explanation?

5. Problem Come up with a good question to be answered.  Example: Why is my puppy howling?

6. Form a Hypothesis “Educated” explanation Must be a testable “If...then...” Format  Example: If there is a high pitched sound, then my puppy will howl.

7. Experiment Design and carry out tests that will help determine if the hypothesis is correct. Write down a procedure & list materials.

8. Variables Independent variable- is the variable that is changed in an experiment Dependent variable-is the factor that is being measured Constants- variables that say the same throughout the experiment Control group-is the sample that is treated exactly like the other experimental groups except the variable is not applied to it.

9. Procedures List of steps to follow to conduct your experiment List of steps to follow to conduct your experiment 1. 1. 2. 2. 3. 3. 4. 4.

10. Materials List List of materials or supplies you will need to conduct several trials of the experiment List of materials or supplies you will need to conduct several trials of the experiment

11. What kind of experiment could you perform with your puppy?

12. Results R ecord data from experiment. Could be notes, tables, pictures, charts & graphs.  Example: What kind of data would we have for our experiment?

13. Conclusions Analyze data and determine if hypothesis was correct. Summarize the results. NEVER GO BACK TO CHANGE YOUR HYPOTHESIS.