Teacher: Subject: MATHEMATICS 9
GRADE 9 Date: June , 2019 Quarter: First
DAILY
LESSON Checked: Noted:
LOG
I. OBJECTIVES
The learner demonstrates understanding of key concepts of quadratic
A. Content Standard
equations, inequalities and functions, and rational algebraic equations.
The learner is able to investigate thoroughly mathematical
relationships in various situations, formulate real-life problems
B. Performance Standard
involving quadratic equations, inequalities and functions, and rational
algebraic equations and solve them using a variety of strategies.
C. Learning Competency/ies The learner characterizes the roots of a quadratic equation using
(Write the LC code for each) the discriminant. (M9AL-Ic-1)
II. CONTENT
The Nature of Roots of a Quadratic Equation
(Subject Matter)
III. LEARNING RESOURCES
A. References
1. Teacher’s Guide Pages
2. Learner’s Materials pages pp. 56-65
3. Textbook Pages
4. Additional Materials from
Learning Resource (LR) portal
B. Other Learning Resources Laptop, monitor, slide deck
IV. PROCEDURES Inquiry (5 min) 7
√−15 24.5
A. Reviewing previous lesson Drill: 8
Identificaion
1. Which are real numbers and which √15 289 √ 25
are not? 9
2. Which numbers are rational and
irrational? √−21 5
3. Which are perfect squares and not 8 12 √ 35
perfect squares?
B. Establishing a purpose for How will you classify numbers?
the lesson
C. Presenting examples of the Collaborative (5 min)
new lesson Group Activity
Perform Activity 2 in LM page 57; “Math in A, B, C?”
D. Discussing new concepts and Collaborative (5 min)
practicing new skills #1 Group Activity
Perform Activity 3 in LM page 57; “What’s My Value?”
E. Discussing new concepts and Constructive (5 min)
practicing new skills #2 Collaborative
Group Activity
Perform Activity 4 in LM page 58; “Find My Equation and Roots”
F. Developing mastery Collaborative (5 min)
Think-Pair-Share
Perform Activity 7 in LM page 62; “What is My Nature?”
G. Finding practical Integrative (5 min)
applications of concepts and Integration of Mathematics to TLE in Practical Arts
skills Perform Activity 8 in LM pages 63; “Let’s Make a Table!”
Reflective (3 min)
How is the concept of the discriminant used in solving real-life
problems?
H. Making generalizations and How does the knowledge of the discriminant help you in
abstractions about the lesson determining the nature of roots of any quadratic equations?
I. Evaluating Learning 1. If the discriminant of a quadratic equation is less than zero, D < 0,
what is the character of the roots?
A. Real, rational and equal C. Real, irrational and unequal
B. Real, rational and unequal D. No real roots
2. Which quadratic equation has irrational roots?
A. x² - 7 = 0 C. x² + 2x + 1 = 0
B. x² + 4x + 4 = 0 D. x² - 8x + 12 = 0
J. Additional activities for
application or remediation
V. REMARKS
VI. REFLECTION
A. No. of learners who earned 80%
on the formative assessment
B. No. of Learners who require
additional activities for remediation
C. No. of learners who have caught
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 or discover
which I wish to share with other
teachers?
