“
/
”
Parts of the Statement
• Independent Variable:
The condition be studied. It is controlled by the scientist.
The thing being tested.
ex. Water
• Dependent Variable:
The condition affected by the independent variable. It
can’t be controlled by the experimenter. The thing being
measured.
ex. Plant Growth
• Control:
The condition that is represented and not changed at
all in the experiment.
How do I write the “IF” part of my
hypothesis???
1. Start your sentence with the word “If”
2. Write down one of the variables
(independent or dependent)
3. Connect statement with one of the
following:
is related to
is affected by
causes
4. Write down the other variable.
Writing the “Then” section of your Hypothesis
• Write the word then (following the “if”
section)
• Make a comment on the relationship
between those two variables.
Ex. If section:
If water affects plant growth,
Ex. Then section:
then the more you water
plants, the bigger they will grow.
Final “If / Then” Statement
If water affects plant growth,
then the more you water
plants, the bigger they will
grow.
Review
• Using the following variables create
your own hypothesis:
• #1
– Independent: Brand of sneaker
– Dependent: how high you jump
#2
-independent: vegetables
-dependent: strength of the person
Students of different ages were given the
same jigsaw puzzle to put together. They
were timed to see how long it took to finish
the puzzle.
1. Identify your variables
Independent Variable
Dependent Variable
2. Write your if then statement.
If……………..then……………….