The document outlines an educational activity focused on identifying and classifying materials as useful or harmful. Students are instructed to examine items from their bags and classroom, classify observed materials from outside, and answer questions regarding their classifications. Additionally, it emphasizes learning about harmful substances at home and proper disposal methods.

1. Science

2. Recognizing Useful
and Harmful
Materials

3. Get Three items from
your bag and three
more items inside the
classroom.

4. Identify each item
and describe it.

5. Now, answer the following
questions.
1. What is the object made of?
2. Are these materials safe or
harmful? Why?

6. Showing of pictures

7. 1. Can you describe the
materials shown?
2. What are the similarities
and differences of materials
given?

8. Bring out the following
materials:
Manila paper
Pentel Pen

9. Activity Time

10. Look around outside of the
classroom, then list down at least
20 materials you have seen.

11. After that, classify their list as
useful or harmful materials.
Useful Materials Harmful Materials

12. Answer the following
questions.
1. How did you classify the
materials?
2. Why do we need to know which
material are useful and harmful?
3. Open your books to page 4 and
read about Recognizing Useful and
Harmful materials.

13. Answer the following
questions.
1. Aside from the material given in
the text, what other materials in
your home can you consider
harmful? Why do you consider
them as harmful materials?
2. How do you properly dispose of
the materials you have listed
above?

14. Answer the following
questions.
1. Aside from the material given in
the text, what other materials in
your home can you consider
harmful? Why do you consider
them as harmful materials?
2. How do you properly dispose of
the materials you have listed
above?

15. Write down the differences
between useful and harmful
materials in tabular form.
Useful Materials Harmful Materials

16. Answer key:

17. Open your book to page 7 and
answer the Lets Check and Lets
Apply It.