This document provides lessons on porosity and density of materials. It includes two activities where students observe whether different materials float or sink in water, and whether they absorb water. The first activity shows that coins sink while wood floats, due to differences in density. The second activity demonstrates that sponges absorb water while plastic does not, due to porosity. Porosity and density are then defined. Students are tasked to identify whether examples given exhibit porosity or density. The document also includes lessons on English and writing paragraphs using outlines and graphic organizers.

1. Week 1 – Day 4
Lesson 4: Porosity and
Density of Materials

2. FACT or BLUFF

3. 1. Malleability refers to the ability of
metals to be flattened into thin sheet.

4. 2.The ability of an object to be
drawn into wires or thread refers to
hardness.

5. 3. Aluminum, which is used in making
flat roofs, is a good example of
malleability.

6. 4. Chalk is harder than stone.

7. 5. Most of the fragile objects at
home are brittle such as glassware
and mirror.

8. Activity 1 – Density
Objectives: Describe the properties of materials as density.
Problem: What materials float and what materials sink?
Materials: basin, 1.5 L water, 5-peso coin and a piece of
wood
Procedure:
1. Pour 1.5 L of water into the basin.
2. Drop the 5-peso coin and a piece of wood at the same time.
3. Observe what happen.

9. Observation:
1.Which is heavier, coin or wood?
2.Why do you think the wood remains floating
despite that it is heavier and bigger?
3.Why did the coin sink?
4.What property of material is being
described?

10. Activity 2 – Porosity
Objectives: Describe the properties of materials as to
porosity
Problem: What materials absorb water and what does not?
Materials: 2 basin, 10 mL water, sponge and plastic cover
Procedure:
1. Put the sponge and plastic cover into different basin.
2. Pour 5 ml of water in each basin and observe what happen
to sponge and plastic cover.
3. Record your observations.

11. Observation:
1.Which materials absorb water?
2.Why do you think the sponge absorbed water?
3. Why plastic cover did not absorb water?
4.What property of material is being described?

12. Porosity. Porous objects have tiny
pores that allow them to easily absorb
liquids. Examples of Porous object are
cotton and kitchen sponge.

13. Density refers to the amount of
mass in a given volume. It is the
property that makes some objects
float in water.

15. Evaluation
Directions: Describe whether the following
materials have a POROSITY or DENSITY.
1. The stone when dropped in water sinks.
2. The block of wood when dropped into
water floats.
3. Mother used rugs to dry the wet floor.
4. Cotton absorbs liquid.
5. Your brother used towel to dry his
sweat.

16. 1. (Porosity)
2. (Porosity)
3. (Density)
4. (Density)
5. (Density)

17. English 5 Day Four
Valentin Macasaet Sr. Memorial Elementary School
Teacher: Kenneth S. Calagui

18. Underline the synonym of the compound word in the following
sentences.
1. Parents provide backstop during Brigada Eskwela. (assistance, food,
ideas)
2.Two weeks later, Erianne was cleaning out the small bag she carried with
her everywhere when she found a thin, black leather billfold. ( bag, jacket,
wallet)
Encircle the antonym of the compound word in each sentence.
3. The policemen broadcast the issue of illegal logging. ( tell new, spread, hide)
4. Luisa wants to stay at the backside. (bottom, front, left)

20.  Who is in the picture?
 What makes him so popular around the world
 What Characteristics of a Filipino does he signify?
 As a Filipino, how do you show respect to others?To God?

21. Boxing
Offering
Prayers
Brave/Strong
Helping Listening to
them

22. Today we are going to write paragraph
based on outline/ other graphic
organizers.

23. Analyze the following graphic organizer. Answer the question that follows
 Based on the semantic web, who is a respectful and a God loving person?
 How does Filipinos show respect to others?
 How do Filipinos Show love to God?

24. FILIPINO

25. .
let us plan a two-paragraph composition using the details of the
semantic web
A Filipino is a respectful person. He calls older brother “kuya” and older
sister “ate”. He kisses the hands of his parents and grandparents. He is always
using “po” and “opo”. He shows de respect to parents, elders and people in
authority.
A Filipino is also a God-loving person. He believes in one God. He
patterns his life the way God wants it. He loves his neighbors. And most of all,
he prays not only for himself

27. F. Closure/ Assessment
The clustering graphic organizer shows and separates the
developed ideas from other ideas.
The use of graphic organizers and outlines provides the
organization of ideas easy to understand and makes
learning more enjoyable.

28. The outline contains a personality of a Filipino. Write a two-paragraph
composition using the following details.
The Filipinos are humane and concern to his fellowmen.
A. Cares for himself and to his fellowmen
B.Thoughtful, loving, understanding, helpful, friendly and charitable
C. Ready to give a helping hand when needed
D. Ready to share laughter to cheer up those who are lonely