2. PRELIMINARY DETAILS
Name of the Teacher : ANJU V. NAIR
Name of the School : M.T.G.H.S.S
Subject : Physics .
Unit : Force
Topic : LiquidPressure
Date : 22/09/2015
Duration : 40 minutes
CURRICULUM STATEMENT
Through performing activities, observing activities, participating in group
discussion, receiving teacher scattoding the learner constructs the concept of liquid
pressure.
CONTENT ANALYSIS
Scientific terms : density, liquid pressure
Facts : A liquid exerts pressure on the container.
Dams are constructed with greater thickness at their base.
Water, through the tap at the ground floor of a multi storied building .
flows with greater force.
Special suits are to be used by people who go deep in the sea.
Concepts : The pressure exertedbya liquid columnincreases withincrease inheight.
The thrust acting per unit area by a liquid is liquid pressure.
LEARNING OUTCOMES
A. Cognitive Competencies:
Recalls the concept of pressure
Defines the major concept
3. Identifies different examples for liquid pressure
B. Affective Competencies:
Shows willingness to know more about the concept.
Shows ideas and views related to the concept.
PRE – REQUISITES
Cognitive Domain : Knowledge about pressure
Affective Domain : Interest to participate in activities
Psychomotor Domain : Skill to do activities
TEACHING LEARNING MATERIALS
Bottle, Water, Black board, chalk
CLASSROOM INTERACTION PROCEDURE RESPONSE
Introduction
Teacher starts the class by showing a picture of a dam.
Teacher asks the students whether they visit dam. Teacher
also ask them why the dams are constructed with greater
thickness at their base. Through this question teacher induces
interest to know about the science behind it.
Presentation
Teacher forms groups to perform activities. Necessary
materials are provided to each group.
Activity – 1
Remove the bottom of a powder tin spread and tie a piece
of balloonto cover the bottom. Pour water slowlyinto the tin.
Discussion points
Does the balloon expand when water is poured into it.
If the pressure is responsible for the expansion of
balloon.
Students share their
experience.
Students observe the
activity.
Students discuss in
groups.
4. Activity – 2
Make three holes on one side of a plastic bottle at various
heights. Close the holes with fingers and fill the bottle with
water. Remove the fingers.
Discussion Points
Does the water flows through the holes.
Through which hole does water flow with lesser force.
Concept Formation
Through observing activities the learner constructs the
concept of liquid pressure. A liquid exerts pressure on the
container. As depth increases liquid pressure increases.
Activity – 3
Make four holes at equal heights around a plastic bottle.
Close the holes with fingers and fill the bottle with water.
Then open the holes.
Concept Formation
Through observing the activities learner constructed the
concept of liquid pressure is same at all points in the level.
Knowledge Construction
Learner constructs the concepts of liquid pressure from
the above activities.
SUMMARISATION
Teacher summarises the concept liquid pressure.
REVIEW
To strengthen the concept teacher asked the following
questions.
1) Define liquid pressure ‘P’?
2) What are the factors affecting liquid pressure?
Students observe the
activity.
Students discuss in
groups.
Students acquire the
concept.
Students observes the
activity.
Students acquire the
concept.
Students say the
definition.
Students answer the
questions.
5. 3) Give equation for liquid pressure?
EXTENDED ACTIVITY
1) Dams are constructed with greater thickness at their
base why?
Students wrote on their
notebook.
