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1. School RAVHS Grade Level Grade 9
Teache
r
Jasmin C. Alang-Miparanum Learning Area MATHEMATICS
Date/Ti
me
October 18, 2022 Quarter 1st
I. OBJECTIVES
A. Content
Standard
The learner demonstrates understanding of key concepts of
quadratic equations, inequalities and functions, and rational
algebraic equations.
B. Performance
Standard
The learner is able to investigate thoroughly mathematical
relationships in various situations, formulate real-life
problems involving quadratic equations, inequalities and
functions, and rational algebraic equations and solve them
using a variety of strategies.
C. Learning
Competencies/
Objectives
(Write the LC
code for each)
Represents a quadratic function using: (a) table of values;
(b) graph; and (c) equation. (M9AL-Ig-3)
a. Differentiate quadratic
functions from linear
functions
b. Represent and identify
quadratic function using:
(a) table of values
c. Value accumulated
knowledge as means of
new understanding
II. CONTENT Introduction to Quadratic Functions
III. LEARNING
RESOURCES
A. References
1. Teacher’s
Guide pages
pp. 85-96
2. Learners’
Materials
pages
pp. 127-129
3. Textbook
pages
4. Additional
Materials from
Learning
Resource (LR)
portal
Grade 9 LCTG by DepEd Cavite Mathematics 2016,
activity sheets, laptop and monitor
IV. PROCEDURES

2. A. Reviewing
previous lesson or
presenting the new
lesson.
B. Establishing a
purpose for the
lesson
1. Which of the mathematical
sentences are quadratic
functions?
2. Which of the mathematical
sentences are NOT
quadratic functions? Why?
3. How would you describe
those mathematical
sentences which are not
quadratic functions?
How are they different from
those equations which
are quadratic?
C. Presenting
examples/instances
of the new lesson
D. Discussing new
concepts and
practicing new skills
# 1
Find the differences between adjacent y – values in each
table, and write them on the blanks provided.

3. E.Discussing new
concepts and
practicing new skills
# 2
1. What do you observe with
the difference of each table
values?
2. How can you recognize a
quadratic function when a
table of values is given?
F. Developing
mastery (Leads to
Formative
Assessment 3)
Consider the given functions f(x) = 2x + 1 and
g(x) = x²+2x-1.
1. What kind of functions is
f(x)? g(x)?
2. Complete the following
table values using the
indicated function,
f(x) = 2x + 1
x -3 -2 -1 0 1 2 3
y
g(x) = x²+2x-1
x -3 -2 -1 0 1 2 3
y
3. What are the differences
between two adjacent
x – values in each table?
4. Find the differences
between each adjacent y –
values in each table.
G. Finding practical
application of
concepts and skills in
daily living
Write a 1 paragraph statement explaining how to recognize
that the given mathematical sentence is a QUADRATIC
FUNCTIONS using the table of values in your own words.
H. Making
generalizations and
abstractions about
the lesson

4. I. Evaluating Learning
J. Additional activities
or application or
remediation
Assignment:
Bring graphing paper tomorrow.
Reference:
Grade 9 Learning Module pp. pp. 127-129
V. REMARKS
VI. REFLECTION
A. No. of learners
who learned
80% in the
evaluation
B. No. of learners
who require
additional
activities for

5. remediation
who scored
below 80%
C. Did the
remedial
lessons work?
No. of learners
who have cope
up with the
lesson
D. No. of learners
who continue
to require
remediation
E. Which of my
teaching
strategies
worked well?
Why did these
work?
F. What
difficulties did I
encounter
which my
principal or
supervisor can
help me solve?
G. What
innovation or
localized
materials did I
use/discover
which I wish to
share with
other
teachers?
Prepared by:
Jasmin C. Alang-Miparanum
Submitted to:
Ingrid A. Dacuno
Head Teacher I