1. What is SCIENCE? A way to answer questions & solve problems
How we understand the world around us
A way or process used to investigate what is happening around you
It provides possible answers

2. A part of an investigation that can be CHANGED
VARIABLE
A part of an investigation that can be CHANGED

3. List the 3 TYPES OF VARIABLES

4. List the 3 TYPES OF VARIABLES
Independent Variable
Dependent Variable
Controlled Variable

5. INDEPENDENT VARIABLE
The variable that can be changed during an experiment
The variable that the scientists chooses to change
The variable that may cause a change in the dependent variable

6. DEPENDENT VARIABLE The factor that is being measured in an experiment
The variable that is measured by scientists
The variable that may change because of the independent variable

7. CONTROLLED VARIABLE (CONSTANT)
Variable that stays the same during an experiment
Variable that is controlled by the scientist
Variable that is not allowed to change

8. How do scientists OBSERVE?

9. How do scientists OBSERVE?
Using the 5 senses:
Hearing
Touch
Smell
Sight
Taste

10. RECORDING DATA Data Tables
A way to record results and observations accurately
Have a descriptive title
Divided into columns & rows
Shows the independent variable
Provides a place to record the dependent variable

11. How do scientists COMMUNICATE the results of their work?
Reported in scientific journals
Science journals
Presentations to other scientists

12. ANALYZING DATA
Reduce the data with the best measure of central tendency
Graph the data
Look for patterns and relations
Look at the shape of the graph

13. What do scientists do when they DRAW CONCLUSIONS?

14. DRAWING CONCLUSIONS? Answer the original question
State whether or not the hypothesis was supported (it is never “right” or “wrong”)
Pose questions for further research

15. HYPOTHESIS A statement that can be tested by conducting an experiment
Prior knowledge, new information, observations can be used to form a hypothesis

16. Why are REPEATED TRIALS necessary in an experiment?
To make sure results are valid
The more trials conducted, the more likely the results are reliable
To make sure a “fluke” is not considered the true result

17. Why do scientists use MODELS?
To save time and money when testing ideas that are
Very large
Very small
Dangerous
Time-consuming

18. On Aggression: What Makes Us Fight?
VIDEO
On Aggression: What Makes Us Fight?

19. EXIT SLIP Please write the answers to these questions in your spiral notebook
What are the three types of variables? What are the differences among each?
What is the difference among an observation, an inference, and a prediction/hypothesis?