Unchanging Area

1. Name of the teacher: Basil Roy Idiculla
Subject : Mathematics
Unit : Area
Sub unit : Unchanging Area
Curricular Statement
To understand the relation between areas in a parallel line through problem solving, drawing
figures, discussion and b y analysing the prepared notes of the pupil.
Content Analysis
New Terms : Area of triangle in between parallel lines.
Facts : Triangle with same base and between the same parallel lines have equal area.
Concept : Concept of area of triangle
Concepts of properties of parallel lines.
Process : Process of finding the area of triangle in a parallel line.
Learning Outcomes
The pupil will be able to
1. Recall the term area.
2. Recognize the area of the triangle.
3. Identifies the concept of area.
4. Explain the area of triangle.
5. Give illustration for area.
6. Compare the area of different triangles in parallel line.
7. Plans to do more problems
Pre requisites : The students have knowledge on area of triangle
Teaching Learning resources: Usual classroom aids, Charts.
Learning Strategies : Group Discussion, explanation by the teacher.
Name of the School: St. Stephen’s H. S
Pathanapuram
Standard : IX I
Strength : 42
Date : 30/07/2015 Time: 40min

2. Class Room Interaction Procedure Expected Pupil Response
Introduction
Activity 1
Teacher checks the home work problems.
Then teacher select pupil randomly and ask questions on what
studied in the previous classes.
And the steps for solving problems.
Presentation
Activity 2
Teacher give a question in chart
‘Draw ∆ABC with AB = 4cm, BC = 5cm and CA = 6cm, draw an
isosceles triangle of the same area with one side as AB itself.’
After explaining this question teacher draw the figure in the black
board using instrument box.
C
A B
Activity 3
Teacher show second question in the chart and ask them to write
in their notebooks
‘Draw ∆ABC in the first problem. Draw a triangle of same area
with one side as AB and < B =30o’
Most pupil answers
correctly
Pupil write question in
their note books.
Pupil observes
Then draw the figure in
their note books
Pupils write in their book.
And try to draw the figure.
6cm
5cm
A B
C
6cm
6cm
5cm
A

3. Activity 4
Teacher divide the class into 10 groups and gave activity card
contain a question and ask them to answer
Closure
Activity 5
Teacher concludes the class by coordinating the problems that
studied in the class.
Review
Activity 6
Teacher ask question to randomly selected students.
To explain the steps for drawing triangles of equal area.
Follow-up activities
Draw a circle and a triangle as in the figure below. Draw a
triangle of same area with all three vertices on the circle.
Pupil discuss in the group
and find the answer.
Pupil recalls.
Pupil answers correctly.
C
A B
3cm
5cm