Inquiry

Asking a testable question based on an observation

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PreLab

Everything you do before you start the actual experiment

1. Problem Statement

2. Experimental Design

3. Set Up Data Table

Post Lab

Everything you do AFTER the experiment

1. Graph results

2. Write a Conclusion

3. Write Validity Statement

Has 5 Parts

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Problem

The question being tested by the experimentor

 written in your own words

Independent Variable

AKA-Manipulated variable

The Variable that is changed by the experimentor

" I change the IV"

Dependent Variable

AKA- The Responding Variable

The Variable that the experimentor measures

Constants

Variables that do not change throughout the entire experiment

(The IV and DV can never be a constant)

Hypothesis

An If, then, because statement

Prediction on how the IV will affect the DV

Ex: IF I increase the amount of mentos, THEN the height of the soda will increase because there is more mentos to react with the diet coke.

1. A list of steps (Like this one)

2. Tells someone how to do the lab

3. Has specific details (like amounts and types of things)

4. Is REPLICABLE

Being able to make an exact copy of an experiment

Details, details, details!!!

It increases VALIDITY

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Validity

How accurate (valid) the data is

• Errors reduce validity
• Good Experimental designs increase validity