Model Lesson Plan

LESSONPLAN

Name of the teacher                            :           Amutha G.S

Name of the School                            :           St.Mary’s Higher Secondary School, Melpalai

Class                                                    :           VIII

Division                                               :           B

Subject                                                :           Physical Science

Unit                                                     :          

Topic                                                   :           Friction

Duration                                              :           45 Minutes

GENERAL INSTRUCTIONAL OBJECTIVES

The pupil,

1. acquires knowledge about friction
2. understands the types of friction
3. applies the knowledge of friction in unfamiliar situation
4. develops  skill in observing the experiments
5. develops interest in doing experiments

SPECIFIC INSTRUCTIONAL OBJECTTIVES

The pupil,

1. recalls opposing force
2. recognizes friction
3. defines friction
4. observes the experiment
5. identifies sliding friction and sliding friction
6. classifies sliding friction and rolling friction
7. defines rolling friction
8. gives reason for rolling friction easier than sliding friction
9. cites example for friction
10. identifies the advantages of friction
11. identifies the disadvantages of friction
12. constructs the table for advantages and disadvantages of friction
13. evaluates the situation
14. recalls the lesson

TEACHING AIDS

1.      Marbles, ball, pencils, book

2.      The chart containing the definition of friction

3.      The chart containing the definition of sliding friction

4.      The chart showing the definition of rolling friction

PREVIOUS KNOWLEDGE

Pupil have already knows about the gravitational force, opposing force

STEPS	SPECIFICATIONS	LEARNING EXPERIENCE	TIME	EVALUATION
INTRODUCTION PPRESENTATION a)EXPLANATION b) DEMONSTRATION c)EXPERIMENTATION APPLICATION REVIEW	The pupil, recalls force and opposing force defines friction observes the demonstration identifies sliding and rolling friction defines rolling friction and sliding friction observes experiment gives reason for rolling friction easier than sliding friction gives examples for friction identifies the disadvantages of friction constructs table for the advantages and disadvantages of friction evaluates the situation                     Recalls the lesson	Teacher motivates the students by asking the following questions and eliciting answers Tr: Are you interested to play cricket? St: Yes Tr: Do you like bating or bowling? St: Bating Tr: When a ball rolling on the playground what happens after moving a distance on the ground? St: It stops Tr: Why it stops? St: There is an opposing force acts on it. Tr: What is the name this opposing force?      Teacher concludes that opposing force acts between the ball and ground is called Friction.      Today we are going to study about “Friction”(B.B) Teacher explains that when a body sliding on the surface of another body there is an opposing force exists. Can you define friction?     Teacher concludes by saying that friction is an opposing force offered to a body sliding on the surface of another body[Teacher display the chart containing the definition of Friction]       Teacher demonstrates the experiment with the help of the pencils, marbles and a book. Teacher place a book on a table and make it to move. Then place a few pencils below the book and ask the following questions Can you identify the name of friction when one body slides over another body? Can you identify the name of friction when a body rolls over the surface of another body?      Teacher concludes that when one body slides over another body, the friction is called sliding friction and when a body rolls over the surface of another body, the friction is called rolling friction.(Teacher display the chart containing definition of rolling friction and sliding friction)        Teacher asks the student to place some pencils on the table and place a book on it. Then asks make it to move the book with his hand. Then remove the pencils and make it to move. Repeat the activity with few marbles instead of pencils below the book. Teacher asks to the students Which is easier? Is rolling is easier than sliding             Teacher concludes by saying that rolling friction is much smaller than the sliding friction.     Teacher asks the students Is the friction having advantages? What are they?               Teacher concludes that friction is used to walk and run on the floor, lighting matches, hold objects, nails and screws stick to the surfaces      Teacher asks the students Do you notice the wear and tear in the machines? Why it happens?         Teacher concludes that the friction is produced between the moving parts of a machine, it produces wear and tear. The foot wear worn out due to friction of walking    Teacher asks the students to tabulate advantages and disadvantages of friction.     Teacher shows a chart containing true or false questions 1. Friction helps us to hold objects 2. A suitcase fitted with wheels at the bottom can easily      moved than without wheel 3. When a body rolls over the surface of another body,     the friction is sliding friction 4. Friction cannot produce wear and tear to the      machines       Teacher concludes that                 1,2→True                 3,4→False   Teacher asks the following questions Ø  Define friction? Ø  Define rolling friction? Ø  Define sliding friction Ø  What are the advantages and disadvantages of friction	5 5 10 15 5 5	What is friction? Define rolling friction? Why rolling friction is easier than sliding friction? What re the advantages of friction? What are the disadvantages of friction?

ASSIGNMENT

1)      Define Friction? Explain the types of friction?

2)      Tabulate the advantages and disadvantages of friction?

3)      Collects some pictures of machines which works using friction