1. WEEK 3 Day 1 Lesson 11: Changes that Materials Undergo

2. GUESS THE TYPE OF PROPERT BASED FROM THE GIVEN PICTURE1. 2.

3. STEEL PIPES 3. 4.

4. 5 6.

5. 5. Sour mango becomes sweet when it ripens, Is it a “Change or No
Motivation
Game: “CHANGE or NO CHANGE”
Say: Today, we are going to play “Deal or No Deal” but instead
of using that phrase we are going to use “Change or No
Change. I am going to call one student to answer the question,
then he/she will answer it using Change or No Change. If your
answer is correct you will receive a star.
1. Liquid water left in the freezer becomes solid. Is it a “Change or No change”?
2. The ice cube is taken out of the freezer and melts. Is it a “Change or No change”?
3. When you leave cup of cooked rice on the table for a day, it turns sour. Is it a “Change or No change”?
4. Sweet sugar may turn bitter when mixed to coffee. Is it a “Change or No change”?
5. Sour mango becomes sweet when it ripens, Is it a “Change or No

6. Materials needed for the activity
pictures,
charts,
activity sheet, balloon,
pencil,
water,
ice cubes

7. 1. Observe the shape of the balloon.
Activity 1 Let’s Change
Problem: How do materials undergo changes?
Materials: pictures of balloon, pencil, water, ice cubes
Procedures:
A. Balloon
1. Observe the shape of the balloon.
2. Blow the balloon, and then observe what happens.
3. Record your answer in the table.
B. Pencil
1. Observe the size of the pencil.
2. Sharpen it for one minute, and then observe what happen.

8. C. Drop of Water
1. Drop 2 mL of water into the teaspoon. Observe the amount of water.
2. Boil the water for 2 minutes. Observe what happens.
3. Record your observation.
D. Ice cubes
1. Observe the ice cubes for a minute.
2. Record your observation.

9. Name of material
Change size
volume
shape
phase
Condition that causes the change
1.Balloon
2. Pencil
3.Drop of water
4. Ice cubes

10. 1. What changes do these materials undergo?
Guide Questions:
1. What changes do these materials undergo?
2. Can you describe these changes?
3. What properties have changed?
Conclusion:

11. 1.What changes do these materials undergo?
A. Group reporting and presentation of output
B. Analysis and Discussion
1.What changes do these materials undergo?
Can you describe these changes?
What process occurs that makes the materials change?
How do you describe physical change?
What conditions brought about these changes?
Was there a new material formed after doing each task?

12. Materials may undergo changes in their size, shape, volume and
Generalization
How do material undergo changes?
Materials may undergo changes in their size, shape, volume and
phase/state. Below are some of the changes you can observe in
the materials.

13. a comfortable way of life.
Application
Challenge your creativity
Group 1 – Young actors/actresses. Present a short skit changes that occurs in materials to help you live
a comfortable way of life.
Group 2 – The Future Singers. Through a song, describe the disadvantages you get from
changes of materials.
Group The Artists. Through a collage, describe the advantages you get from physical
change of materials
Group 4 —Through a poem site the advantges of changes in materials.

14. ___1. The lumber is cut into three equal parts.
Evaluation
Identify the change in the material being described in the following situation. Write A - if it is change in shape; B - if it is change in size; and C – if it is change in phase/state
___1. The lumber is cut into three equal parts.
___2. Water is placed in a bottle.
___3. Grinding of meat.
___4. Pound a teaspoon of peanuts.
___5. Ice removed from freezer then melted.
IV. Assignment:

15. Give examples of changes that materials undergo. Identify the type of
IV. Assignment:
Give examples of changes that materials undergo. Identify the type of
changes as to size, shape or phase/state.

16. Thank you

17. WEEK 3 Day 2 Lesson 12: Physical Change in Materials
PRECY R. UMALI
JZMES

18. Let pupils sing the song: Cooking is Fun (To the tune of Planting Rice) Cooking task is really fun When your heart is filled with joy. Slicing, cutting, and pounding are some of the works involved Observe now,observe now, what changes may happen? When you chop your meat into pieces. Cooking, cooking is really, really fun. Try now, try now and it is indeed fun!
Engagement

19. 1. chalk 2. air inside the balloon 3. soy sauce 4. stone 5. oxygen
Review
Pass a ball while the music is playing. Whoever holds the ball as
the music stops will be the one to tell whether the object is solid,
liquid, or gas.(words may be written on a piece of strip colored
paper or teacher may use pictures instead of written words)
1. chalk
2. air inside the balloon
3. soy sauce
4. stone
5. oxygen
Motivation
Ask pupils to get a piece of paper. Instruct them to tear it to make a
heart shape. Observe the formed shape
Ask:
How is the heart shape formed? What did you do with the
paper?
What changes happened to the piece of paper after tearing it?

20. Activity “Let’s See What Happen?
Exploration
1. Divide the class into four groups.
2. Recall the standards in doing the activity.
3. Let the pupils do the activity.
4. Instruct them to answer the guide questions after the activity.
Activity “Let’s See What Happen?
What you need:
old magazines/newspaper, scissors, rubber band, copper wire
wooden stick, stone, hammer, piece of cloth, ice cubes, glass
What to do:
A. collaborate with your group in doing the activity

21. B. Instruct each member to perform the following tasks one by one.
1.Cut the old magazine or newspaper into pieces.
2.Stretch the rubber band.
3.Wind the copper wire around the wooden stick.
4.Pound the stone using a hammer. Do not forget to wrap the
stone in a piece of cloth before pounding.
5.Put the ice cubes inside the glass. After a minute, observe
what happened to the ice cubes.
6.What changes did you notice? Write your observations in
the table.

22. Material Observation before after 1.Bond paper 2.copper wire
3. Rubber band
4. stone
5. Ice cube

23. What did you do with the bond paper?
Explanation
1. Let the pupils report their output by groups (Teacher may encourage
the pupils to report their work in varied ways.)
What did you do with the bond paper?
What changes took place after cutting the bond paper into
pieces?
What did you do with the rubber band?
What changes took place after stretching the rubber band?
What did you do with the wire?
What changes took place after winding the copper wire around
the wooden stick?

24. What did you do with the stone?
Explanation
1. Let the pupils report their output by groups (Teacher may encourage
the pupils to report their work in varied ways.)
What did you do with the stone?
What change took place after pounding the stone using hammer?
What did you do with the ice cubes?
What change took place after putting the ice cubes in a glass?
What changes did you notice with the materials?
Are there new products formed?
How do we call the changes that took place?

25. When does matter undergo physical change?
Elaboration/Extension
1. Have the pupils formulate generalization by asking:
When does matter undergo physical change?
1.What is the importance of physical changes in the materials
2.What benefits people can get from the following examples of
Physical changes:
1. water into ice ___________
2. stretching of rubber band _________
3. cutting of wood __________________
4. evaporation of water ______________

26. (pencil changes in size)
Evaluation
Describe the physical changes that take place in each picture below .
Write your answer on the blank after the picture____________ 1.
(pencil changes in size)

27. 2.
(change in color)s 3.
(change in state)

28. 4.
(change in csize and shape 5
(change in state)

29. List down the activities that involve physical changes.
Assignment
List down the activities that involve physical changes.
Ex. washing of clothes and drying them under the sun.

30. Thank you

31. LESSON 13: CHANGES THAT MATERIALS UNDERGO
WEEK 3 Day 3
LESSON 13: CHANGES THAT MATERIALS UNDERGO
PRECILA R. UMALI
JZMES

32. A. Engagement:
1. Review
Let the pupils guess the hidden word by studying the pictures shown.
C ___T

33. M E L_

34. POUN__

35. STRE__ __

36. MI_

37. Today, we are going to do another activity which will show
another kind of change. So, let’s investigate the change that
will happen in the activity and let us try to compare it with the
previous one which was discussed yesterday.
7. Group the pupil
8. Setting of standards.
9. Activity Proper

38. Materials needed for the activity:
Pictures
Paper
sugar
spoon,
safety matches,
Worksheets
Science
courseware module

39. Materials: paper, sugar, spoon, safety matches, worksheet
Activity 1
Showing How Chemical Change Takes Place in Materials
(Burning of Paper)
Problem: What change takes place in burning paper and
heating sugar
Materials: paper, sugar, spoon, safety matches, worksheet
Procedure:
1. Describe the characteristics before doing the activity.
2. Burn a paper using a match and describe what change took place.
3. Heat a table spoonful of sugar and describe what change also took place.
4. Answer these:
1.What change took place as you burn the paper? as you heat the sugar?
2.What was formed after burning the paper? Heating the sugar?

40. Findings to be recorded in chart
BURNING OF PAPER
Materials
Describe the material before burning/heating
Changes that took place after
New material formed?
paper
sugar
CONCLUSION

41. 1.What change took place as you burn the paper?
Explanation
5. Answering the guide questions during observation.
1.What change took place as you burn the paper?
2.What material was formed?
3.What change took place after heating the sugar?
4.What is formed when sugar was heated?
5.How will you describe the materials before and after burning/heating?
6.What happens to the composition of the materials burned/heated?

42. What are the properties of iron and rust
What are the properties of iron and rust? Do they have the same properties?
Iron easily combines with oxygen to form rust. Rust is soft and powdery. It is weak.
Iron is one material that is very hard. Because of its hardness and strength. It is used to build cars, bicycles, window, grills and other machines

43. Is there a new material formed during chemical changed?
Sometimes when a material changes, it doesn’t look like the original material. Its composition becomes different. This kind of change is called chemical change

44. What acts as a catalyst in rusting?
Water increases the rate at which iron rusts. Water acts as a catalyst in the process of rusting. A catalyst is a material that speeds up chemical change. However, it itself does not change

45. Can it be brought back to original form?
The properties of the new materials are different from the original ones.
When a material undergoes a chemical change, the new material formed cannot be brought back to its original form
Burning is an example of chemical change. It produces

46. Some chemical reactions take place rapidly. Others take place slowly
What happens to charcoal after burning?
What new material will be formed if you burn fire woods?
Some chemical reactions take place rapidly. Others take place slowly

47. When iron rusts, it produces a material that is ___________.
Evaluation
Read each item carefully. Choose the letter of the best answer.
When iron rusts, it produces a material that is ___________.
A. Hard B. Strong C. Weak D. Light
2. Which of the following is a product of combining iron and oxygen?
A. Wood B. Nail C. Diamond D. Rust

48. A. Freezing of ice B. rusting of a steel wool
3.Which of the following situation shows that materials change in composition?
A. Freezing of ice B. rusting of a steel wool
C. Cutting a piece of wood
D. melting ice cream under
the sun

49. 4. In which condition will rust occur?
Near the shore
C. away from the shore
C. Under the heat of the sun
D. in a cool dry place

50. 5. Which is true about change in materials when burned?
A. A new material is formed.
B. The product can be restored to its original form.
C. The new product becomes smooth and shiny.
D. The new material is lost.

51. Match the original materials with its product after the change.
IV. Assignment:
Match the original materials with its product after the change.
1. burned wood A. vinegar
2. leftover food for a week B. rust
3. coconut water in a bottle
left for a week
C. sugar & oxygen
4. wet iron nails
D. spoiled food
5. photosynthesis in plants E. charcoal

52. T H A N K Y O U

53. Lesson 4: Chemical Change in Materials
WEEK 3 Day 4
Lesson 4: Chemical Change in Materials

54. What image is formed?
chemical change?

55. Materials needed for the activity
1manila paper
Marking pen
Activity sheet

56. 1. Introduce the Lesson 14 “Chemical Change in Materials”
GROUP ACIVITY
Divide the class into small group
1. Introduce the Lesson 14 “Chemical Change in Materials”
2. Check for the completeness of the materials brought by the pupils for the activity. Distribute the activity sheet, manila paper and marking pen
3.Give other necessary instructions in doing the activity (i.e. allotted time for the activity, the data table to be accomplished, group presenter/member’s role/ responsibility, precautionary measures to take etc.)

57. small water bottle, baking soda, vinegar, plastic spoon,
Activity
What you need:
small water bottle, baking soda, vinegar, plastic spoon,
funnel o embudo, water, plastic cups, small balloon, spoon
What to do:
1. Add ½ cup of water into a water bottle.
2. Put two tablespoonful of baking soda into the water.
3. Put one tablespoon of vinegar into the balloon.
4. Secure the mount of the balloon over the bottle. Be sure that no vinegar flows into the bottle.
5. After fitting tightly the balloon to the bottle, raise the balloon slowly to allow vinegar to flow into the bottle. Observe what happens.

58. 3. What change happened to
Guide Questions
1. What did you observe when the vinegar dropped slowly to the baking soda in the bottle?
2. What are the changes in the materials have you observed? Is there a change in temperature?
3. What change happened to

59. 3. Clarify misconceptions when needed.
Explanation
1. Have the group representative present the results of the activity. Two minutes may be given per group presentation
2. Discuss the activity. Check the pupils’ responses to the activity questions.
3. Clarify misconceptions when needed.
4. Help the pupils formulate their own ideas/concepts by asking:
1. What are the materials that you used in the activity?
2. How will you describe the materials before performing the activity?
3. What other changes can be observed from the reaction?
What can you infer from these observations?
4. How did you know that there was chemical reaction taking place between the baking soda and vinegar?
5. What can you infer from the observation?
6. What new material was released when baking soda was combined with the vinegar in the bottle?
7. Now, what can you say about the materials you used after the activity?
8. Will the vinegar still go back to its original form? How about the baking soda?
9. What do you call the change in the activity?

60. Chemical change is to determine whether or not a new substance is formed. When the intrinsic properties of the original substance or substances are lost and are replaced by new ones, then a chemical change takes place. There are, however, certain clues that indicate the occurrence of a chemical change

61. change in color – tarnishing, rushing, and bleaching are examples of changes in color that are indicative of chemical changes.
change in odor – putrefaction or decay of organic matter, a chemical change, is often accompanied by the formation of foul smell. Any change in odor is almost always an indication of chemical change

62. change in taste – the souring of milk and other edible substances are also an indication of chemical change.
effervescence or the formation of bubbles – the formation of bubbles from leaves of water plants is an indication of photosynthesis, a chemical change. The action of acids on metals

63. precipitation –the formation of insoluble particles of solid may result from a chemical change. The cloudy suspension that results from the action or carbon dioxide on limewater is a chemical change
exothermic and endothermic reactions – the loss or gain of heat in most changes is often an indication of a chemical change.

64. 3. Why is chemical change important to people and to the environment?
E. Evaluation
1. What are the evidences that should be observed in order to say that chemical change took place? Give at least two (2) answers.
2. What other examples can you cite that involves chemical change? Give at least two (2) answers.
3. Why is chemical change important to people and to the environment?

65. List down at least 5 chemical changes that happened in your
Assignment:
List down at least 5 chemical changes that happened in your
community.

66. WEEK 3 Day 5
Lesson 15: Changes that Happen in Materials due to Presence/Lack of Oxygen
PRECY R. UMALI
JZMES

67. Folding Cutting Crumpling Tearing
Review
Distribute the pieces of scratch paper to the class. Ask them to
manipulate it to show physical change through:
Folding
Cutting
Crumpling
Tearing
PRECY R. UMALI
JZMES

68. Materials needed for the activity :
matchstick
scratch paper or bond paper
2 tablespoons of white or refined sugar
candle
PRECY R. UMALI
JZMES

69. What happened to the scratch paper? What changes did you observe?
MOTIVATION
The teacher will perform a simple demonstration of burning paper.
Note: Collect the papers after the activity.
Ask:
What happened to the scratch paper?
What changes did you observe?
Can you return the ash into a scratch paper? Why or
Why not?
PRECY R. UMALI
JZMES

70. What will happen to sugar inside the pot when
Exploration
Predict what will happen if we heat white sugar in a pot. Fill up the chart below.
Problem
Prediction 1
Prediction 2
Prediction 3
What will happen to sugar inside the pot when
heated?
PRECY R. UMALI
JZMES

71. 1.Put a scoop of sugar in a spoon.
Activity
What you need:
2 tablespoons of white/refined sugar
candle
spoon
1.Put a scoop of sugar in a spoon.
2. Light the candle and heat the spoon with sugar .
Caution: Be very careful when heating the sugar. The teacher may assist on this part. Do not taste it.
3. Observe what happened.
4. Put off the candle when the sugar is about to melt.
5. Record your observations on the chart below.
PRECY R. UMALI
JZMES

72. Recording the observations
Characteristics
Before Heating
After Heating
Color
State/Phase
Odor
PRECY R. UMALI
JZMES

73. 1. Did the sugar change its color? Describe it.
Explanation
1. Did the sugar change its color? Describe it.
2. Did its phase change?
3. What are the indications that the sugar really underwent chemical change?
4. Is there a new product formed?
5. What were the changes that occur in sugar due to application of heat?
6. Are your predictions correct?
PRECY R. UMALI
JZMES

74. Explanation
A chemical change occurs to materials when heat is applied. Change in color, taste and odor, production of smoke, ash, bubbles, fire, new products and even heat are the indications of chemical change.
PRECY R. UMALI
JZMES

75. Evaluation
1. Aling Maring burns leaves early in the morning in their backyard. Which of the following is the indication that material formed into new form when heat is applied on it?
A. ash B. fire
C. heat D. smoke
PRECY R. UMALI
JZMES

76. 2. Which of the following procedures in cooking banana cue involves
Evaluation
2. Which of the following procedures in cooking banana cue involves
chemical change?
A. peeling the bananas
B. melting the sugar
C. putting the bananas on the sticks
D. selling the banana cue
PRECY R. UMALI
JZMES

77. A. pyrite comes into contact with acid. B. food is digested.
Evaluation
3.Ash is a new substance formed when ______.
A. pyrite comes into contact with acid.
B. food is digested.
C. a fruit turns moldy.
D. wood is formed.
PRECY R. UMALI
JZMES

78. 4. Which of the following activities showed chemical change
Evaluation
4. Which of the following activities showed chemical change
due to application of heat?
A. pancake making
B. cutting of wood
C. straightening of hair
D. rusting of nail
PRECY R. UMALI
JZMES

79. 5. Which of the following is NOT an indication of chemical
Evaluation
5. Which of the following is NOT an indication of chemical
change due to application of heat?
A. change in color
B. change in odor
C. change in taste
D. change in size
PRECY R. UMALI
JZMES

80. Materials: cotton, calamansi juice, bond paper, light bulb/fluorescent
Assignment
Home Connection:
Materials: cotton, calamansi juice, bond paper, light bulb/fluorescent
bulb/emergency light
What to do:
1. Use calamansi juice and swab of cotton to write words or draw pictures on a bond paper.
2. Hold the paper near a light bulb for 3-5 minutes.
Safety Note: Be sure not to hold the paper too near the heat source (light bulb), as the paper may burn.
Question: What changes happen to the materials?
PRECY R. UMALI
JZMES