Detailed Lesson Plan
Student: RICHARD P. DELLOSA
Course & Year: BSED MATHEMATICS-1B
Instructor: MATTHEW E. CAÑEDA
Topic: MEASURE OF MASS
I.
Objectives
At the end of the lesson, students must be able to:
a. Define mass and distinguish it from weight.
b. Understand the units of mass and how to convert between them.
c. Use a balance scale to determine the mass of objects.
II.
Subject Matter
Topic: Measure of mass
Reference:
Materials: weighing scale, pen, paper and 5 sacks of cotton
III.
Procedure
Teachers Activity
A. Preliminary Activities
A. Greetings
Good morning class!
Students Activity
Good morning sir!
B. Prayer
C. Checking of attendance
D. Setting of standard
The students will read the classroom
rules.
E. Review
All right class let me ask you a
few questions.
What is this?
Balance/Weighing Scale
Where can you see a weighing In the retail store, homes and in
hospital or laboratory setting.
scale?
What is the use of this tool?
When are we going to use a
weighing scale?
To measure the weight or mass of the
object.
When measuring the mass or weight in
the inside of the container.
F. Motivation
Before we proceed to our
lesson try to answer the
following questions.
Write H if you the object is
heavier than the other and
write L if the object is lighter.
1. A. 1 kilogram of rice =
B. 2 kilograms of cotton=
2. A. ½ kilo of apple =
B. ¼ kilo of pie =
3. A. 1½ kilo of gas =
B. 2⅛ kilos of paper =
Answer Key:
1. A= L
B= H
2. A= H
B= L
3. A= L
B= H
G. Presentation of the
lesson
This moment we will discuss
about "measure of mass"
B. Lesson Proper
a. Activity
This time, I will group you into
two groups, BOYS vs. GIRLS.
Materials needed:
 Balance scale or weighing
scale
 Coins
(Students go to their respective
groups)
Instructions:
1. Start by placing an object of
known mass (such as a coin)
on one pan of the balance
scale.
2. Add objects of known mass to
the other pan until the scale is
balanced.
3. Record the total mass of the
objects on the second pan.
4. Repeat the process with
different combinations of
objects of known mass to get
a feel for how the scale works.
5. Once you have a good
understanding of how the
scale works, try using it to
determine the mass of an
object of unknown mass.
6. Place the object of unknown
mass on one pan of the scale
and add objects of known
mass to the other pan until the
scale is balanced.
7. Record the total mass of the
objects on the second pan,
and subtract the mass of the
objects of known mass to
determine the mass of the
object of unknown mass.
b. Analysis
What is the measure of mass?
What instrument is used for
measuring mass?
(Students will participate)
(Students will participate)
It is an important concept in physics
that allows us to understand the
properties and behavior of matter. It is
a fundamental property of an object
and is typically represented by the
symbol "m" in equations. The unit of
mass is the kilogram (kg) in the
International System of Units (SI).
Balance scales are simple instruments
that consist of two pans suspended
from a beam, and the mass of an
object can be determined by adding
known masses to one pan until the
beam is balanced.
What is the difference
between mass and weight?
In summary, the measure of
mass is a crucial concept in
physics that allows us to
understand the properties and
behavior of matter. It is an
intrinsic property of an object
and is used to describe the
amount of matter present. It is
important to distinguish
between mass and weight, as
they are different physical
quantities.
It is important to note that mass is
different from weight, which is the force
exerted on an object due to gravity.
Weight is a measure of the
gravitational pull on an object and is
dependent on the mass of the object
and the strength of the gravitational
field. The unit of weight is the newton
(N), which is defined as the force
required to accelerate a mass of one
kilogram at a rate of one meter per
second squared.
(Students Listens)
c. Abstraction
Mass is a measure of the amount of
Class in our discussion a while matter in an object.
ago, What is mass?
It is typically measured in units of
What is the standard unit for
kilograms (kg) or grams (g).
measuring mass?
In general, objects with a
larger mass will have a greater
resistance to changes in their
velocity, while objects with a
smaller mass will be more
easily accelerated or
decelerated.
d. Application
It's time to apply our leanings.
(Students will group themselves)
The class will be divided into 5
groups
(Student will proceed to their
respective groups)
Task:
Measure the mass of 1 sack.
Class, before we start assign
first your leader and secretary.
(Students will all participate)
(Every group will be given 10
minutes to measure a sack of
cotton)
Note: I have 5 sacks here and
the inside of it is cotton. All 5
sacks have the same mass or
weight.
(Studens Listens)
(After the activity, a participant
of the group will report their
answer in front of the class)
(result of each group will be
submitted after the activity)
IV.
Evaluation
Write your answer on the paper. Just
choose the letter of the answer.
1. What unit of measurment is
mass measured in?
A. pounds
B. ounces
C. grams
Answer Key:
1. C
2. Elizabeth measures the mass
of some oranges.What
instrument is she using?
2. B
A. Ruler
B. Weighing scale
C. Tape measure
3. Which of these cannot be
used to measure mass?
A. Weighing scale
B. Ruler
C. Calculator
4. A measure of how much
matter an object has is
_______.
A. gravity
B. mass
C. volume
5. Mass is expressed in what
type of units?
A. meters and kilometers
B. grams and kilograms
C. liters and milliliters
V.
3. A
4. B
5. B
Assignment
A. Convert the kilogram(s) into gram(s) Answer Key:
1. ½ kilogram =
A.
2. ¼ kilogram =
1. 500 grams
3. 2¼ kilograms =
2. 250 grams
4. 3½ kilograms =
3. 2250 grams
5. 4⅛ kilograms =
4. 3500 grams
B. Convert the gram(s) into kilogram(s)
5. 4125 grams
6. 250 grams =
B.
7. 500 grams =
1. ¼ kilogram
8. 750 grams =
2. ½ kilogram
9. 1000 grams =
3. ¾ kilogram
10. 10000 grams =
4. 1 kilogram
5. 10 kilograms