Independent variable = Cause

Writing a Hypothesis:

Dependent variable = Effect

An independent variable is a condition or ________________________________________in the experiment.

Example

1:_______________________________

Example

2:_______________________________

Example

3:_______________________________

• A good hypothesis is ____________________________.

• Just because a hypothesis is good doesn’t mean it has to be _________________!

• Has to be written in the ____________________ format

• The “if…then…” format helps to show a clear relationship between the _____________________and _____________________________.

• Your hypothesis should be _______________________!

• *Rule of thumb: ______________________________*

Dependent variable is the factor of the experiment that is ___________________________________________________________________________________.

Example

1:_________________________________

Example

2:_________________________________

Example

3:_________________________________

Dependent Variables

Independent Variables

• Weight of a skateboard • Amount of gas in the car• Plant height growth• Distance traveled • Amount of money spent• Speed of the skateboard• Hours in the mall • Temperature

Example: Does the number of days absent from school affect

school avg.?

If students miss 2 weeks of school minimum then their average will

decrease.

Yes, their grades will drop at least 25% when they miss school.

If students are sick from school then they need to get make up work

tomorrow.

If students miss school then their average will not decrease.

Exit Slip

Name:_______________________ Per:__________Would webbed fingers or webbed toes more greatly increase the speed of a swimmer doing the freestyle stroke?What is the independent variable?

________________________________________________What is the dependent variable?

________________________________________________Make a hypothesis about the question.

________________________________________________

________________________________________________

________________________________________________