This document outlines a biology lesson plan about the Theory of Evolution taught by Neethu L Devasia to 10th standard students. The lesson aims to teach students about Lamarck's Theory of Evolution through discussing how giraffe evolved long necks and snakes lost limbs. Students will learn about the four laws of Lamarck's theory through charts and activities involving group work and answering questions. Formative assessment and a follow up activity drawing giraffe evolution are also included.

1. Name of the Teacher:Neethu L Devasia Standard : X
Name of the School: St. Thomas High School Strength :20
Subject: Biology Date: 21/8/14
Unit :The story of life and organism Time : 40 min
Topic : Theory of Evolution Period :V
Curricular Statements
Learning Outcomes
Factual Knowledge
Conceptual Knowledge
Procedural Knowledge
Metacognition Level
Process Skills
Create
Attitude
1) To obtain knowledge about evolution of organism.
2) To understand the theory regarding the formation of different species
of an organism.
3) To attain an idea about evolution theory.
4) To develop positive attitude towards diverse species evolved during
evolution.
1) The learner recognizes changes occurred during the time of evolution in
an animal.
2) The learner explains theory of evolution.
3) The learner give reason for stretching of long neck of giraffe.
4) The learner evaluate different laws of Lamarck’s theory of evolution.
The learner develop observation skill by observing changes of animal like
giraffe during the time of evolution.
The learner communicate with others about importance of evolution.
The learner become able to identify the species formed during the time of
evolution.
The learner develop positive attitude towards variation acquired by an
organism at the time of evolution.

2. Content Analysis
Terms
Facts
Concept
Major
Minor
Pre-requisites
Teaching-Learning
interaction
Species, evolution, ancestor, limbs, inheritance, Lamarck.
1) Lamarck put forward one of the theories regarding Evolution.
2) He suggested that changes in an individual are acquired during its
lifetime, by increased use or disuse of organs.
3) Through continuous use of neck, giraffe with long neck evolved.
4) Ancestors of snake had limbs and their disuse led species of snake
without limbs.
5) Ancestors are the forefathers of present species in the environment.
6) Characters are acquired by an individual are inherited by its offspring.
7) Influence of environment lead to the changing habits of species.
Lamarck theory of evolution.
Changes appeared during the time of evolution in an organism.
The learner already knows that species living today have an ancestor of
typical physical features.
The learner already knows that formation of evolution is not a sudden
change.
1) A chart showing the changes appeared in the physical structure of
Giraffe.
2) A chart showing 4 laws of Lamarck’s theory.

3. Teaching-Learning Interaction
As part of awakening process, the teacher shows a picture of giraffe with short neck and one
picture with long neck. Then conduct a discussion with the students.
Pupils
Response
What do you understand from this picture?
Do you know the reason behind this?
Okay, then watelse do you know about Evolution?
Let us look at the Scientist who put forward the Theory of Evolution.
Theory of Evolution (B. B. H)
Teacher shows a chart having 4 laws of Lamarck. Before that teacher says about a short detail
about theory. Lamarck suggested that changes in an individual are acquired during its lifetime,
by increased use or disuse of an organ. Teacher then ask one of the student to read out the
chart.
Presentation No:1
Teacher shows the chart of Four Laws of Lamarck’s theory
Teacher then explains these laws with suitable examples like Giraffe and Snake.
Then she shows another chart having the physical changes appeared in the animal like Giraffe.
Presentation No:2
All says
two types
of giraffe.
Some
pupils
may say it
is due to
the
change of
evolution.
Pupil
remain
silent.
Pupil
listen
carefully.
Pupil read
out the
chart one
by one.
Living organisms and their component part tend to increase in size
continuously.
The formation of new organ in the body is the result of new need and
new movement.
Constant use of an organ results in its better development while disuse
cause its reduction and degeneration.
Characters acquired by the individual during its lifetime are inherited by
its offspring. It means changes are cumulative over a period of time.

4. Activity No:1
The teacher divides the class into four groups. Each group were given activity sheets and ask
the m to discuss about changes occurred during evolution.
Questions
1) Who put forward Theory of Evolution?
2) Characters acquired by an individual are inherited through ________.
3) What result constant use of an organ?
4) What happens disuse of an organ happens constantly?
Teacher asked the students to read out the answers in group wise.
Pupil
observes
carefully.
Pupil
divide in
group and
discuss on
the topic.
One pupil
from each
group
read their
answer.

5. Activity No:2
The teacher ask about the concept behind the Theory of Inheritance of Acquired Characters.
Discuss in group and consolidates as points. After discussion write down your points.
Formative Assessment
1) Which are the four laws of Lamarck’s theory of Evolution?
Follow up Activity
Write down the four laws of Lamarck theory of Evolution and draw the picture of changes
acquired by giraffe during evolution?
___________________
Pupil
discussed
in group
and
answered
as
characters
are
acquired
by an
individual
from its
offspring.
LECTURE CUM PICTURISATION