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Daily Lesson Log
School
Teacher
Teaching
Date / Time
Ramon Avanceña National High School
Ms. Shane Catherine T. Besares
Grade Level
Grade 8
Learning Area
Science
Quarter First(Physics)
DAY:
I. OBJECTIVES
A.
Content Standards
B.
Performance Standards
The learners demonstrate an understanding of Newton’s three laws of motion and
uniform circular motion.
The learner shall be able to develop a writer plan and implement a “Newton’s
Olympics”.
S8FE –Ib-17
 Demonstrate how a body responds to changes in motion.
C.
Learning Competencies / Objectives
Write the LC code for each
Objective:
Solve problems involving the interrelationships of net force, mass and acceleration
Module I: FORCE AND MOTION
Lesson 5: THREE LAWS OF MOTION
The Law of Acceleration: Computation
II. CONTENT
III. LEARNING RESOURCES
A.
B.
References
1.
Teacher's Guide Pages
pp. 13- 16
2.
Learner's Materials Pages
pp. 15 - 17
3.
Textbook Pages
4.
Additional Materials from Learning
Resource (LR) portal
Other Learning Resource
Physics ( Science and Technology Textbook- NPSBE Edition)
EASE Physics, Module 10. Lesson 3
Lesson Guide G8 First Quarter pp. 20 - 22
IV. PROCEDURES
A.
Reviewing previous lesson or presenting
the new lesson
Ask the students to restate the second law into a simple statement.
Derivation of Formula:
From the statement that acceleration is directly proportional to force at constant
mass.
Mathematically a = kF where nK =
B.
Establishing a purpose for the Lesson
mass (eq. 1)
Acceleration also varies with mass. As the mass of the object increases with the
same amount of force applied, its acceleration decreases thus:
a= k(1/m) where K=net force (eq.2)
Combining the two equations, we have a α F and a α 1/m
Therefore, a = F/m
Mathematically, a = F/m
where a= acceleration
m= mass
F= force
Give and discuss at least two examples of situation/problems on the
C.
Presenting examples / instances of the
new lesson
Law of Acceleration
1. A huge stone is pushed with 30 N of force. If there is only 5N of
friction and the stone’s mass is 88 kg. What is the acceleration of?
the table?
2. A car is being towed. If its mass is 1750 kg and it accelerated at
5m/s2, how much net force is involved?
D.
Discussing new concepts and practicing
new skills #1
Do the Activity Worksheet prepared by group and use the formula of Acceleration.
E.
Discussing new concepts and practicing
new skills #2
Presentation of the outcomes.
F.
Developing mastery
(Leads to Formative Assessment 3)
Discuss the answers in the exercise given.
G.
Finding practical applications of
concepts
and skills in daily living
Engineers at the Johnson Space Center must determine the net force needed for a
rocket to achieve an acceleration of 70 m/s2. If the mass of the rocket is 45,000
kg, how much net force must the rocket develop.
Mathematically, second law of motion can be expressed:
A = F/m
F = ma
M = F/a
H.
Making generalizations and abstractions
about the lesson
If the unit of Fnet ( Fn) is in Newton, mass(m) is in kilogram (kg) and acceleration is
in meter per second/second (m/s2)
Since force is a vector quantity and mass is a scalar quantity, acceleration is also a
vector quantity where acceleration follows the direction of the net force
The unit of acceleration can be derived also from N/kg, since
1N = 1 kg.m/s2 therefore, N/kg = kg.m/s2 /kg = m/s2
Direction: Solve problems involving the Law of acceleration then write the letter of
the correct answer.
1. What is the mass of a truck if it produces a force of 14,000N
while accelerating at a rate of 5 m/s2?
A. 280 kg
*B. 2800kg
C. 70,000kg
2. Which is the correct unit of acceleration?
A. m/s
*B. m/s2
C. kg.m/s
I.
Evaluating Learning
D. 7000kg
D. kg.m/N
3. Suppose that a sled is accelerating at a rate of 2m/s2 . If the net
force is tripled and the mass is halved, what then is the new
acceleration of the sled?
A. decrease by half
B. doubled
*C. tripled
D. quadrupled
4. Suppose a ball of mass 0.60 kg is hit with a force of 12 N. Its
acceleration will be:
*A. 20 m/s2 B. 40 m/s2
C. 10 m/s2 D. 20 m/s
5. If the ball in question no. 4 is increased by 24 N, what is the
increased in acceleration?
A. 20 m/s2
B. 30 m/s2
*C. 4 0 m/s2
D. 50 m/s2
J.
Additional activities for application or
remediation
Give additional information regarding: balance and unbalance forces.
V. REMARKS
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VI. REFLECTION
A.
B.
C.
No. of learners who earned 80% in the
evaluation
No. of learners who require additional
activities for remediation who scored below
80%
Did the remedial lessons work? 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 worked?
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?
Prepared by:
SHANE CATHERINE T. BESARES
Teacher I
Checked by:
LILIAN A. SUMAMPONG
Department Head
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