Lesson Plan (Physics Form4)

Lesson Plan

Time : 80 minutes (double period)
No. of students : 40
Level of proficiency : 4S3
Theme : Forces and Motion
Topic : Momentum
Learning objective : Analyzing momentum
Learning Outcome : By the end of the lesson, students will be able to:
1. state the principle of conservation of momentum
2. define collision between two bodies
3. problem solving ; determine final velocity of a body
after collision.

Skills involved : 1. ICT skills
2. Critical thinking
Content : 1. Whole-class discussion
2. Interactive learning
Teaching Aids : 1. Simulation set
2. Transparency
Previous knowledge : 1. define the momentum of an object.
2. define momentum (p) as the product of mass (m) and
velocity (v) i.e. p = mv [kgms-1]


Stage/Time

Content
Presentation/Rationale

Set Induction
5 minutes


Quiz on previous lesson;
a) momentum
b) problem solving

Teacher divides the class into four groups.
Teacher gives quiz to the groups on previous lesson.

Rationale
To start off the day’s lesson


Development
Stage 1
10 minutes

Whole-class discussion

Material: Teaching courseware











Teacher shows examples of collision in daily life.
Teacher asks students to relate collision with momentum.
Students answer the given questions based on the collision shown.
Students are given hints such as velocity, mass and number of bodies.

Rationale
Students are informed the concept of
momentum in collision.





Stage 2
40 minutes


1. Explanation
2. Pair work

Material:
Transparency
Simulation set



Teacher explains to the students about conservation of momentum.
Teacher shows the equation of conservation of momentum.
Teacher explains the conservation of momentum using simulation set .
Using the set, teacher explains how to determine the velocity of the bodies.
Teacher gives different situations and calls upon students to respond showing how to determine final velocity of a body after the collision using the simulation set.
Students in the group asked to determine the final velocity for equal mass and unequal mass.
Students are encouraged to cooperate each other while the teacher observes their action.
Teacher-student discussion.

Rationale
Students learn to think and apply the theory to solve the problem.


Stage 3
20 minutes

Group-work

Material:
Handouts of questions

Teacher gives handouts of question for each group to solve.(Appendix A)
Students in groups discuss the questions and determine the values using the simulation set.
Students are to present their discussion to the class.

Rationale
Critical thinking on solving the problems. Student will explore the simulation on their own(ICT Skill)


Closure
5 minutes


Teacher sum up the lesson of the day
Teacher asks the students to prepare for next lesson; elastic and non-elastic collision
Teacher goes through the day’s lesson
Students are asked to be at the Physics lab for the next lesson








Appendix A


Question A
A ball of mass 0.8kg strikes a wall at a velocity of 10ms-1 and rebounds at 6ms-1. What is momentum, before striking the wall and after the rebound?


Question B
An astronaut of mass 90 kg moves with a velocity of 6ms-1 and bumps into a stationary astronaut of mass 100kg. How fast will the two astronauts move together after collisions?


Question C
A 50kg skater is travelling due east at a speed of 3ms-1 before colliding with another skater of mass 60 kg travelling in the opposite direction at a speed of 7ms-1. After the collision, the two skaters hold on to each other. In which direction will they move? What is the speed of the two skaters?


Question D
A trolley of mass 3kg moving with a velocity 0f 2ms-1 collides with another trolley of mass 05kg which is moving at a velocity of 1 ms-1 in the same direction. If the 0.5kg trolley moves at a velocity of 2.5ms-1 in the same direction after the collision, what is the velocity of the 3kg trolley?


Question E
A bull of mass 250kg is moving with a momentum of 750kgms-1. Find its velocity.