DETAILED LESSON PLAN
IN TEACHING
MATH
I. OBJECTIVES
At the end of the 60 minutes discussion, at least 75% of the students are able to:
1. Define ratio
2. Visualize ratio
3. Express ratio
II. SUBJECT MATTER
Topics: Ratio
References: Mathematics for a Better Life, pp 194-197
Materials: marker, scissors, bond papers, paper strips cartolina
K.B.I.: Listen attentively and keep Silence
III. PROCEDURE
TEACHER’S ACTIVITY STUDENT’S ACTIVITY
A. PREPARATION
1. Opening Prayer
Good morning! Good morning, Miss Ren.
Everybody please stand for the
opening prayer. Alice please lead the prayer. Alice: Oh God Almighty… Amen.
Grace, will you please lead an action
song. Grace: (leading an action song)
Please be seated. Thank you, Ma’am.
2. Checking of Attendance
Class who are absent from the class? Class: None, Ma’am.
Very Good, let us do the Aling
Dionisia clap for everybody is present today. (Clap clap clap)
3. Setting of Standards
By the way, are you now ready for our
discussion? Class: Yes, Ma’am.
Good! But before that, what will you
do if your teacher is discussing in front? Yes,
Beverly? Beverly: I will listen carefully, Ma’am.
Very Good! What else Angel? Angel: Avoid talking with my seatmate,
Ma’am.
That’s good. Now, how about if you
want to answer my question? Joy? Joy: I will raise my right hand, Ma’am.
You got it! What else? Eddie? Eddie: Do not answer in chorus, Ma’am.
All right! Now, let us see if you can
really follow our agreement today. Are you
now ready? Class: Yes, Ma’am
4. Checking of Assignments
By the way, do you have an assignment
class? Class: None, Ma’am
All right.
B. MOTIVATION
I have here four colored paper strips.
Each strip contains a task. Now, I will divide
the class into four to complete the tasks. Try
to look under your armchair, you will see a
colored paper strip pasted (yellow, blue,
green, red), that will be your corresponding
groupings. For those who got yellow strips
please occupy the first three rows in front-left,
for those who got blue strips please occupy
the first three rows-right, for those who got
green strips please stay at the back of yellow
team, and for those who got red strips please
occupy the seats at the back of blue team. I
will give you 2 minutes to prepare and 2
minutes to present your output in front.
Are you ready? Class: Yes, Ma’am
Okay, time starts now.
2 minutes is over, please proceed to the
presentation of your output. First to present
will be the yellow team, followed by blue
team, then green team, and lastly, red team. Yellow Team:
Blue Team:
Green Team:
Red team:
C. PRESENTATION
As you can see from the given tasks,
what idea comes in your mind? Yes, Ken. Ken: I thought of one thing is compared to the
other.
Very Good! What do you call it if you are
going to compare one thing to another thing?
Vic? Vic: When you compare two things, it is called
ratio.
D. DISCUSSION
Now class, who can define what is ratio?
Yes, John. John: A ratio is a comparison of two quantities.
All right, who can give an example of a Jayson: There is 1 teacher for every 50
ratio? Jayson? students.
Very good, Jayson!
Class it is being stated that a ratio is a
comparison of two quantities. On the other
hand, a ratio can be expressed in two ways, do Class: No, Ma’am.
you know what are those two ways?
Okay, we can write a ratio in two ways:
1
in colon form: 1:50 or in fraction form 50 . We
read the ratio “50 to 1”.
Now, can anybody give me some
Methus: The ratio of the number of boys to
example of a ratio? Yes, Methus?
girls is 1:10 or the ratio of girls to boys is 10:1.
E. GENERALIZATION
Alrie: A ratio is a comparison of two
Again, Alrie what is a ratio? quantities.
Very good, Alrie. Now, what are the two
ways of writing or expressing ratio? Yes, Marjun: Ratio can be written in colon form or
Marjun? in fraction form.
Yes, thank you Marjun.
Let us give Alrie and Marjun an angel (Clap Clap Clap)
clap.
F. APPLICATION
This time, I will group you into four
groups. Please count from one to four. Name
your group with “MATH” on its first syllable,
for example MATHinik. Are you now with Class: Yes, Ma’am.
your group?
I have here four envelopes with a task
inside, selecting one representative in your
group to come here in front to pick one
envelope. I will give you 5 minutes to prepare
and 3 minutes to present your output in front
of the class.
Are you now ready? Class: yes, Ma’am.
First group:
a) What is the ratio of the number of vowels
to the number of consonants in the
English alphabet?
b) What is the ratio of the number of
number of vowels to all letters in the
English alphabet?
c) What is the ratio of the number of boys to
the number of girls in your class?
d) What is the ratio of the number of boys to
all students in your class?
Second group:
Use the picture. What is the ratio of the number
of:
a) butterflies to hens?
b) flowers to butterflies?
c) dog to bones?
d) hens to chicks?
Third group:
Draw a picture to show:
a) a ratio of 4 to 8
b) a ratio of 5 to 6
c) a ratio of 3 to 7
d) a ratio of 1 to 9
Fourth group:
There are sets of rational expressions in the
table below. Check the column Agree if the
entry in column I is equivalent to the entry in
column II and check Disagree if the entries in
two columns are not equivalent.
I II Agree Disagree
The ratio of
the number
of stars to
triangle is
1
3:1 or 3 .
The ratio of
the number
of heart to
smiley is 1:1
1
or 1 .
The ratio of
the number
of moons to
suns is 4:1
4
or .
1
The number
of arcs to
circles is 3:5
5
or .
3
Okay, guys 5 minutes is over. Please
select a representative to present your work in (Presenting their output)
front.
Good job, everyone! Let’s give everyone
a round of applause. (Clap Clap Clap)
IV. EVALUATION
Use the set of pictures. What is the ratio of the number of:
1. to ? 6. dogs to cats?
2. to ? 7. roosters to dogs?
3. to ? 8. dogs to all animals?
4. to and ? 9. cats to all animals?
5. to and ? 10. cats to roosters and dogs?
V. ASSIGNMENT
Study in advance on how to reduce ratios to lowest terms.
Prepared by:
Aubrey Rose P. Imbang
