How to write a good
hypothesis.
Step 2 in the Scientific Method
What is a hypothesis?
an educated
guess or
prediction
How do you write a
GREAT hypothesis?
Use the If, then formula
If + independent variable, then +
dependent variable
Or….
If I change this, then this will happen.
Example
Problem: I wonder if the amount of
food affects my cat’s weight?
If I feed my cat a lot of food,
then she will get fat.
Remember…
Try to use INCREASE and DECREASE
in your hypothesis!
Ex. IF I increase the amount of food I give my
cat, THEN she will increase her weight
You are predicting CAUSE and EFFECT
Now Try it on Your Own!
Your homework:
‘Hypothesis Practice”
Just ‘plug and chug’ in your
variables!
References
• This PowerPoint was adapted from
Ms. Ubbing’s Science Wiki
• http://msubbingscience.wikispaces.c
om/LS+1++Science+Investigations+and+Exper
iments