4. You have to change something, measure something,
and keep everything else the same
You have to measure everything accurately
Reliability: You have to measure things three times
youtube.com/watch?v=ozSIRh2z3Zk&ab_chan
nel=NwgYog
5. Question 3:
Experiments in Science have
to be fair tests otherwise the
results might not be valid.
freepik.com/premium-photo/conducting-fair-tests-shot-young-
scientist-using-microscope-lab_27216979.htm
6.
7. Lesson Purpose and Intention
Describing and writing the
components of a scientific
investigation.
How important this is for
learning and when answering
questions in science.
10. DOCK to the RIGHT PORT
What you are
trying to prove
What you
measured
What you learned
from your results
11.
12. Fair Testing
Gabriel blew up some balloons with air and tied them along a fence in
his backyard to see what happened to them in sunlight. Some balloons
were in the shade of the tree.
Gabriel wondered why some balloons started to get bigger – some even
got so big that they popped when they got very hot. “I think the balloons
are getting bigger when the temperature is getting higher.”
He said to himself. “I wonder what experiment I could do to find out the
answer and make sure it’s a fair test?”
13. Fence (kural) - a barrier made of posts and wire to
mark boundary
Backyard – an area behind the house typically
surrounded by a fence
Balloon – bag of light material that can be inflated
especially with air or gas.
14.
15.
16. TIMER
Gabriel wondered why some balloons started
to get bigger – some even got so big that they
popped when they got very hot.
I think the balloons
are getting bigger
when the temperature
is getting higher.
I wonder what
experiment I could do
to find out the answer
and make sure it’s a
fair test?
17. Questions (4B)
1. What should Gabriel use to measure the air
temperature?
2. How should he determine the precise size of
the balloon?
3. What should Gabriel need to consider to make
sure that his experiment is a fair test?
21. measure the circumference
of the balloon using a tape
measure for three times.
How should he determine the precise
size of the balloon?
22. Question 3:
What should Gabriel need to
consider to make sure that his
experiment is a fair test?
23. What should Gabriel need to consider to make
sure that his experiment is a fair test?
The balloons must be of the same type and size from the
beginning/ or from the start.
Use the same measuring device and scale in measuring
the circumference of the balloons.
Use the same thermometer to measure the temperature
each time.
Perform the experiment at the same time of the day to
ensure same weather condition.
Use the same color of balloons during the test.
(Dark color absorb more heat than lighter ones because they absorb more light energy)
24. Questions (4C)
1. How should Gabriel write down all his
measurements?
2. What is Gabriel’s aim for the experiment?
3. If Gabriel’s experiment works out how he
thought it would, what should he write as his
conclusion?
28. to prove that air
balloons expand and
even burst when the
temperature rises
What is Gabriel’s aim for the
experiment? to design an experiment
which is a fair test
www.maxpixel.net/Gas-Tank-Gas-He-Helium-Balloon-Cut-Out-Tank-6268301
29. Question 3:
If Gabriel’s experiment
works out how he
thought it would, what
should he write as his
conclusion?
30. the results showed that as the
temperature increased by x degrees, the
size of the balloons increased till they
burst.
If Gabriel’s experiment works out how
he thought it would, what should he
write as his conclusion?
www.maxpixel.net/Gas-Tank-Gas-He-Helium-Balloon-Cut-Out-Tank-6268301
31.
32.
33. Question 1:
Has this lesson
helped you to better
understand what fair
testing means in
Science? If so, how?
34. Question 2:
Has this lesson helped
you to remember the
components of a
scientific investigation?
If so, how?
