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1. Objective:
Describe the properties of
materials as to malleability,
ductility, flexibility and
elasticity

2. “Mystery Box”
Mechanics:
1. Form two groups with equal number of
members (preferably 6-8)
2. Representative from each group will pick an
object from the mystery box and describe its
property as to hardness and brittleness
3. The group that earns the highest score will be
the winner..

3. a. Group the class into 5.
b. Distribute the materials for exploration.
c. Refer to the activity sheet for instructions and
procedures
d. Manipulate the objects and describe the
property each object possesses
e. Record the findings on the table
Materials Observation/Description
balloon Rubber bond Plastic bag
Electrical wire Paper Clip

4. a. What happened to the materials: balloon,
rubber band, plastic bag, electrical wire, and
paper clip?
c. Which among the materials have the same
characteristics or descriptions?
e. What are the properties shown by the
manipulated objects?
f. What are the characteristics of the materials
that possess malleability, ductility, elasticity and
flexibility
g. What is the importance of these properties
to our life and to the environment?

5. There are some materials that have different
properties as to malleability, ductility,
flexibility and elasticity.
❖ Malleability is the ability of a metal to be
hammered or beaten flat. Gold, silver, and
copper are malleable that can be formed into
different pieces of jewelry
❖ Ductility is the ability of a material to be
stretched or pulled out and be formed into
fine thin wires.

6. ❖ Flexibility is the ability of a material to
be bent without breaking. Wires, rubber,
cloth and some plastic are flexible
materials that can be folded, pressed or
stored.
❖ Elasticity is the ability of a material to
be stretched and returned to their
original form when released.

7. Materials have different properties
according to their uses. These properties
are hardness, softness, brittleness,
absorbent, waterproof, flexibility,
durability, transparent, conductor of heat
or electricity and insulator of heat or
electricity.
a. What if rain boots were made of paper?
b. What if pans and pots were made of
plastic?

8. Describe by writing the properties of
materials at the left column.
Name of Materials Property
1. Paper clip
2. Electrical wire
3. Empty Dextrose bottle
4. Garter
5. Gold earrings

9. IV. Assignment:
Gold and silver are metals. Why are
these materials not suited for electrical
wires?