LESSON PLANS

Lesson Plan 1: Understanding Work, Energy And Power (Inquiry Learning Model)

Subject: Physics

Class: Form 4 Kindi

Date: 1 November 2010

Time: 8.00 am – 8.40 am (40 minutes)

No. of students: 25 students

Learning Area : Forces and Motion

Learning Objective: Understanding work, energy and power

Learning Outcomes: At the end of the lesson, a student is able to:

A Master content knowledge

a. State that Power is inversely proportional to the time taken. b. State that work is directly proportional to the force and displacement.c. Construct the formula P=W/t from both the relationships (a) and (b) above, where P is the power, W

is the work done and t is the time taken.d. Solve one numerical problem involving the equation P=W/t .

B Master Scientific Skills/TSTS

a. Carry out an activity to find the relationship between power and work given books, stopwatch, marker pen and white board.

C Demonstrate Scientific Attitudes and Noble Values

a. Actively participate in carrying out the activity based on agreed upon procedures as a team.

b. Appreciate the value of time by carrying out the activity briskly and being on task all the time.

Scientific Concepts:

Power is.

a. Decrease with time at the same amount of work. b. Increase with work at the same amount of time taken.

Materials, equipments and resource materials:

Books – 10 units

Stopwatch – 2 units

Marker pen – 1 unit

White board – 1 unit

PowerPoint slides

Consideration of Safety Precautions:

None

Prior Knowledge:

Students have already learned the operational definition of power, P=W/t, and have applied it in solving problems involving power and work.

Phase Content Teaching and Learning Activities Notes

Teacher Activities Student Activities

Introduction/Eliciting Ideas

(5 minutes)

Definition of power, P=W/t

Make connection to students’ prior knowledge on power by asking questions elicit students’ ideas based on daily life, teacher asks students which one has more power, superman or power rangers.

Students respond to teacher’s questions

Strategy/Technique:

Whole class Q&AVisual picture

Structuring/ Restructuring of Ideas

(20 minutes)

Power is

a. is directly proportional to work

b. is inversely proportional to time taken

c. can be written as P=W/t

Ask two central guiding question:

1. What is the relationship between work and power?

2. How to derive the question P=W/t?

Teacher selects two students: student A and student B. Both

Students make

Strategy/Technique:

Interactive demonstration by student

students required to come in front of the class with more than 5 identical books for each of them.

a.

b. Activity 1:

All books are putting on the floor. The distance from the floor (start point) to table (end point) is 2 meter. Student A and B are require to pick up the books on to the desk in 5 seconds.

c. Activity 2:

All books are putting back on the floor. The distance from the floor (start point) to table (end point) is 2 meter. Student A and B are require to pick up all 5 books on to the desk in their own time. Teacher will record the time taken by student A and student B to pick up all 5 books.

Guide students to construct the equation P=W/t from the two relationships

prediction, inference, observation and conclusion

Students make hypotheses, give suggestions on the design of an experiment and state all the variables involved.

Then students carry out the activity to answer the central guiding questions.

Students make conclusion and construct P=W/t

An inquiry activity in groups.

Application of Ideas

(10 minutes)

1. The more books are picked up, the more power of system.

2. The less time is

Show problems on slides Students solve problems in groups

Strategy/Techniques

taken to pick up the books, the more power of system

3. One problem involving the use of P=W/t

Students present their solutions

Group discussion followed by group presentation

Resources: PP slides

Reflection/

Closure

(5 minutes)

Power is

a. is directly proportional to work

b. is inversely proportional to time taken can be written as P=W/t

Assess students’ understanding by giving a crossword of power and work.

Create enthusiasm by having students compete in groups.

Show summary of main ideas on slides

Write problem solving using P=W/t in exercise book

Students discuss in groups when answering crossword.

Students conclude the lesson by verbally stating the main ideas and relating to their initial ideas

Strategy/Techniques

Whole class Q&A

Resources: PP slides