Useful and Harmful Materials
I. Learning Competency:
Use the properties of materials whether they are useful or harmful S5MT-Ia-b-1
LO7:
Explain how different materials become useful to the community. S5MT-la-1.7
LO8:
Explain how different materials become harmful to the community.S5MT-Ia-b-
1.8
II. Directions:
Using the picture of the
materials in the first column, write its useful and harmful effect on its
corresponding column.
IV. Generalization:
Useful materials are
materials or things that can be used anytime, anywhere and are hassle-free or
not harmful to human beings.
Harmful
materials are thing that should be stored carefully and must be keep out of
rich of children.
References:
Answer:
II.
1. harmful
2. useful
3. useful
4. harmful
5. useful
III. Answers vary:
1. muriatic acid- used for
removing bacteria
2. insecticide
3. soap
4. condiments
5. electric fan
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