7. !!!
In experimenting, students determine
the variable they need to manipulate.
This would entail establishing two
groups that possess similar
characteristics. One group will be
given the special treatment while the
other will serve as the control group.
Then the results will be analyzed to
find out any difference brought about
by the variable being tested.
8. ration
ale
1. To develop the skill in the basic science
processes.
2. To cultivate an inquiring mind among the
young.
3. Higher-order thinking skills especially
critical thinking, creativity and
inventiveness are best acquired by
experience and constant use.
4. “Learning-by-doing” forms part of the
student’s attitudes, habits and ways of
reacting.
5. A methodical procedure, as a way of
solving puzzling/problem situations, is
internalized and instantly applied.
9. ration
ale
6. Hearsays, superstitions and unfounded
beliefs are replaced by more objective
assessment and evaluation. Suspending
judgment and carefully weighing evidences
are acquired through constant use of
experimenting.
7. The students are made aware of the ways
of the scientists, their persistence,
anxieties and relentless toil, thus instilling
the value of being appreciative and grateful
for their achievements.
8. Because they have to complete the
experiment by themselves from problem,
procedure, to conclusion, they become
responsible for their own learning activity.
10. reminde
For an experiment to be successful:
1. The problem must be well-defined and
clearly understood before performing the
experiment.
11. reminde
2. Choose one variable to be tested at a
time. Never vary two or more conditions in
an experiment, otherwise confusion like
“what results from which” will ensue.
12. reminde
3. Every students
should be actively
involved in
manipulating tools,
materials and
equipment. It is by
direct experience
through constant
practice that they
improve on their
inquiry skills.
13. reminde
4. An observant teacher
could easily spot incorrect
steps and procedure. Early
guidance could avoid
mistakes that might douse
off their enthusiasm to
continue.
14. reminde
5. Improvisations of some needed tools
and substitutions for some materials may
be encouraged in order to promote
resourcefulness and creativity.
24. Materials:
• 1 slice of cooked gelatin
• ¼ tsp of blue dye
• Watch with second hand
• Teaspoon
• Medicine Dropper
• Bottle of Bagoong
• Soy Sauce
• Clear Bottles
• Water
25. Procedure:
A.Place a slice of cooked
gelatin on a plate.
Sprinkle ¼ tsp of blue
dye on the surface of
the gelatin. Record the
time when you did this.
Set the gelatin aside
and observe how long it
will take the blue dye
to penetrate. Then
26. Procedure:
B. Place a drop of soy
sauce into a half
bottle of water.
Record the time you
dropped the soy sauce
into the water.
Observe the water for
a few minutes without
moving the glass. Note
down your
27. Procedure:
C. Place a small bottle
of bagoong in a box.
Cover the box. Ask a
group mate to sit
about 2 ft. away from
you. Record the time
the moment you smell
the bagoong. Record
the initial time then
open the box.
28. DAT
A Name of Materials Observations on the
materials before and
after diffusion
a. gelatin
Blue Dye
b. Soy Sauce
Water
c. Bagoong
29. Guide Questions:
A. 1. What happened to the blue
dye? Did you observe any
change? Describe the change.
2. Did you see any change in
color of gelatin? If so, what
caused this change?
3. Did your observation show
that the blue dye spread in
the gelatin?
4. How long did it take the
blue dye to spread down?
5. Infer a reason for the
30. Guide Questions:
B. 1. What happened to the soy
sauce as it was dropped to
the glass of water?
2. What happened to the
soy sauce and water after
a few minutes?
3. How long did it take the
soy sauce to spread
completely?
4. Infer a reason for the
spread of the soy sauce.
31. Guide Questions:
C. 1. What happened when the
bottle of bagoong was
uncovered?
2. How long did it take for the
odor to reach you?
3. What was the smell of
bagoong in the bottle?
4. How did the smell of
bagoong reach your group
mates?
5. How did the odor reach
you?
32. Diffusion happens because
molecules of a substance
are in constant motion.
When placed in a medium,
they continue to move, and
as they move they bump
each other. They also bump
the molecules of the
medium and are, in turn,
bumped by other
molecules. The spaces
33. Comparison between solids,
liquids and gases
Basis of
Comparison
SOLID LIQUID GAS
a.
Intermolecular
space
Smallest
distance
between
molecules
Small space
between
molecules
Large space
between
molecules
b. Molecular
attraction
Back and
forth
Slip and
slide
Moves freely
c. Molecular
motion
Slowest Slow Fastest
34. Direction: Answer the
following questions.
1. Why can you smell the
odor of the food your
mother is cooking in
the kitchen?
2. Why does water flow?
3. Draw the arrangement
of molecules in solids,
liquids and gases.
35. ASSIGNMENT:
1. Why should you cover your
nose when someone in the
room is smoking?
2. Why should you cover your
mouth whenever you cough?
3. Many people from far
away provinces opposed the
operation of the Bataan
Nuclear Power Plant
because an accident in this
plant would affect them.
