A lesson for Grade 4 Science

2. Reminders
• 1. Listen attentively to the teachers.
• 2. Always wait for your turn to
speak.
• 3. Just raise your hand if you want to
answer.
• 4.Respect other’s answer or opinion.
• 5. Cooperate within your group.
• 6.Do the tasks on time.

3. SCIENCE TIME
• What shall we do in our Science
Time?
We observe, we compare
We use our eyes
and we use our ears
hands and nose and tongue (2X)

4. Mixture

5. Combine

6. Solid

7. Heterogeneous

8. Homogeneous

9. Distinguish

10. Change

11. Materials

12. Fill in the blanks.
When a solid material like 1.______
is heated, it absorbed heat. The heat
absorbed/ added to the
materials caused the material to
change its form from 2.______ to
3._______. The material also changed
its 4._________, 5________,and
6._________, when
heated.

13. When liquid materials like
7.________ is cooled, it
removed/released heat. The heat
removed/released from the
material caused the material to
change its form from 8._______to 9.
________. The material also
changed its 10._________,
11.________ and
12. .________, when cooled.

14. Let us check your answers.
• 1. butter/Chocolate bar/margarine
2. solid 9. solid
3. liquid 10. size
4. size 11. shape
5. shape 12. texture
6. texture
7. butter/Chocolate bar/margarine
8. liquid

15. A B

16. 
List down all the ingredients that you
notice on the picture.

17. List down all the ingredients that you
notice on the picture.

18. •Let us now investigate
what happens when
solids are mixed with
other solid materials.

19. Guide Questions
1. Which pair of materials can still be
distinguished from their original state
after mixing/ combining them.
2. Which pair of materials cannot be
distinguish from their original state after
mixing/ combining them?
3. Which mixture looked the same
throughout?

20. 4. Which mixture did not look the
same throughout?
5.Is there a change in the property
of each solid material in the mixture?
6. What happens to the solid
materials when mixed with other
solid materials?
7. Compare and contrast the physical
state of each solid material before
and after was mixed with other
materials.

21. What are the
standards in doing
the group activity?

22. • Participate actively.
• Keep your working area clean.
• Keep quiet and work on the
assigned tasks.
• Refrain from playing while
doing the activity.
• Cooperate with your group
mates.

23. Procedures
• 1. Prepare one tablespoon of each of
the materials listed in the table.
• 2. Using the spoon, mix/combine the
pairs of solid materials (Listed in the
table in the mixing bowl or any plastic
container.
• 3. After mixing/combining the materials,
observe what happens. You may also
touch/feel the resulting mixture. Record
your observations on the table below
by checking the proper column.

24. • Group 1- mix instant coffee and creamer
- iodized salt and vetsins
Group 2 – mix paper clips and staple wires
- flour and baby powder
Group 3 – mix rock salt and pepper
- white sugar and iodized salt

25. WORK PERIOD

26. Group 1
Solid
Materials
Can you
still
Identify/
each solid
material in
the
mixture?
Did the resulting
mixture look the
same throughout?
Can you still
Identify/ each
solid material in
the mixture?
YES NO YES NO YES NO
1. Coffee and
creamer
2. Iodized salt
and vetsin

27. Group 2
Solid
Materials
Can you
still
Identify/
each solid
material
in the
mixture?
Did the resulting
mixture look the
same
throughout?
Can you still
Identify/ each
solid material
in the mixture?
YES NO YES NO YES NO
1. Staple wire
and paper
clip
2. Flour and
baby powder

28. Group 3
Solid
Materials
Can you
still
Identify/
each solid
material
in the
mixture?
Did the resulting
mixture look the
same
throughout?
Can you still
Identify/ each
solid material
in the mixture?
YES NO YES NO YES NO
1. Rock salt and
pepper
2. White sugar
and iodized salt

29. •Presentation of Output

30. When the solid materials is mixed
with other solid material, each of
the combined/mixed materials can
be easily identified/distinguished
from one another. Such mixture is
called heterogeneous mixture.

31. • Some solid materials, when mixed
with other solids, cannot be
distinguished from each other. If the
resulting mixture looked the same
throughout such mixture is called
homogeneous mixture.

32. Let us learn more
• Identify whether the following
mixture is heterogeneous or
homogeneous.

41. SUMMARIZING THE LESSON

42. Classify the mixtures.
• Homogeneous Heterogeneous
• Mixture Mixture

44. Tell what kind of mixture
• 1. Pinakbet 6. Pork sisig
2. Menudo 7.Compost pit
3. Dough 8.Soil
4. Ice cream 9. Pizza
5. Lumpiang sariwa 10. Leche Plan

45. Assignment
• Bring the following materials tomorrow
1 pc teaspoon tap water
cooking oil 1 teaspoon sand
1 pinch salt 1 pinch vetsin

46. ENRICHMENT
Give 5 examples of
heterogeneous and
homogeneous mixture.

47. The End…..
Thank You