Subject : Physics
Topic : Force and Motion
Subtopic : Acceleration and Deceleration
Form : 4B
Date : 16 February 2009
Time : 1.20 pm – 2.20 pm
Duration : 60 minutes
Number of students : 44 students
Learning outcome : At the end of the lesson, students should be able to:
i. Define acceleration and deceleration and state that
ii. Calculate speed and velocity.
iii. Calculate acceleration and deceleration.
iv. Solve problems on linear motion with uniform acceleration
• v = u + at.
• s = ut + ½ at2.
• v2 = u2 + 2as.
Prior knowledge : In form 2, students already learnt the basics of force and motion
on land. They also learn about speed in learning area of dynamic.
Learning material : Microsoft Power Point, exercise handouts, marker pen, white
Attitudes and values : Thinking rationally, being cooperative, being confident and
independent, hardworking, and thinking skills and high self-
Scientific skills : Observing, defining operationally, measuring and using numbers,
inferring, relating and communicating.
Procedure/Time Content/Learning Outcomes Activity of student and teacher Material and Method
From the previous lesson, students had learnt •
Elicitation of Method
Teacher greets the students with a very
ideas about: - Questioning and
good morning and seeks for students’
( 10 minutes ) answering
Distance and displacement. readiness to learn.
Teacher state about the previous lesson Material
• Speed and velocity.
- Power Point
to recall students’ prior knowledge.
• v = s/t ; rate of change of distance
of • Teacher shows some animations of car
• v = s/t; rate of change
in different situation to the students.
• Students are given 1 minute to observe
• The SI unit for speed and velocity.
the animations shown.
• Teacher asks the students about the
situation happen to the car and what it
is relate to.
• Students answer the question based on
The objectives of today’s lesson are:
Define acceleration and deceleration •
• Teacher state the objective of the
lesson to the students.
and state that a = v – u
• Calculate acceleration and
Step 2 What is the definition of acceleration and Teacher shows the animations of the Method
Restructuring of deceleration? - Explanation
car and a series of dots produced by the
ideas - Questioning and
State the definition of acceleration car when it is accelerates.
( 20 minutes ) answering
and deceleration. Teacher asks the students about what
~ Acceleration is a measure of how quickly the series of dots refer to.
Students are given 2 minutes to think Material
velocity changes. •
- Power Point
~ Acceleration is defined as the rate of and response to the question.
Teacher asks the students what happen - Marker pen
change of velocity with time. •
- White board
• State the equation of acceleration: • Teacher asks the students about the
a=v–u definition of acceleration or
t deceleration based on what they
• State that a negative value for a observed and answered before.
deceleration. • Students are given 2 minutes to define
acceleration and deceleration.
• Teacher asks about the equation of
acceleration and asks about the
differences of acceleration and
Step 3 Students are given two questions Method
Activity in group to solve problem by
Application of - Explanation
using the equation of acceleration. related with acceleration and
ideas deceleration. - Questioning and
( 10 minutes ) answering.
Students are given 3 minutes to think
and solve the problem in front of the Material
- Power Point
Teacher discusses the solution of the - White board
- Marker pen
problem with the students.
Step 5 Closure Teacher states the objectives achieved Method
Reflection - Explaining
Pop quiz on that day.
( 10 minutes ) Students work in group and will be -Questioning and
given a question at a time.
Students are given 1 minute to answer Material
the question and each group will give - Power Point
the answer of their own.
• Teacher will give 5 marks to group
which give the correct answer and 0
marks for wrong answer.
• Teachers will discuss the answer if the
students give wrong answer.
• The group that collects the greater
marks will receive a gift from teacher.
Step 6 Conclusion Teacher gives a question paper to Method
( 10 minutes ) students to solve it at home and will - Explanation
discuss the question on the next class.
the - Question paper
• Teacher gives motivation to
students to make more exercise and
revision in order to get A in Physics