2. The Scientific
Method involves a
series of steps that
are used to find an
answer to a
problem.

3. The steps of the scientific
method.

4. 1)Observation
AH—Look at this!
Observe a problem or
anything around you

5. Example:

6. Observe the skittles in front of
you.
Record your observation.
Observation
Color
skittles 1 skittles 2
Dull
Shiny

7. 2) Question
Develop a question or
problem that can be
solved through an
experiment.
Q) Will?

8. 3) Research

9. After you search the internet
and the books for information
you find out that:
Lemon, vinegar and tomato sauce
can be use to clean silver and
metal objects

10. After you made your
research,
Can you guess an answer to
your question?

11. 3) Hypothesis
An educated guess.
Lemon juice can be
used to clean the dull coin.

12. NOW, lets test
whether our
hypothesis is right
or wrong.

13. 4) Experiment
Make a test to test
whether the hypothesis
is correct.
1)Put the coin in the
lemon juice.
2) Wait for 5 min. and
record the results.

14. 5) Record results
In tables, graphs.
Dull coin
After 5 min.
in the lemon
juice
Shiny

15. 6) Conclusion
The answer to the
question (you state
whether your hypothesis
was right or wrong)..
The lemon juice cleans
the dull coin.

16. Any experiment has
Variables

17. WHAT ARE
Variables?

18. Variables
Variables are
things that
vary and change

19. In any experiment there are 3 variables:
Things you
change
Things you
measure
Things you
keep the
same to
have a fair
test
Let’s look at each type….

20. Example 1:
Investigating how a weight
affects the length of an elastic band.
You decide the weight to put.
You measure the length of the
elastic band.
You use the same elastic
band to have a fair test.

21. Example 2:
Investigating how the rate of cooling of a
beaker depends on the initial temperature.
You decide the initial temperature.
You measure the rate of cooling.
You use the same
thermometer, same amount of
liquid to have a fair test.

22. Example 3:
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.
You decide the ages of students.
You measure the time they to
finish the puzzle.
You use the same jigsaw
puzzle to have a fair test.

23. Example 4:
The higher the temperature of water, the
faster an egg will boil.
You decide the temperature of the
water.
You measure the time it took the
egg to boil.
You use the same type of egg
to have a fair test.

24. Example 5:
The temperature of water was measured at
different depths of a pond.
You decide the depth of the pond.
You measure the temperature of
the water.
You use the same
thermometer to have a fair
test.