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SCHEME OF WORK
Biology
Form 4 2024
TERM II
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WK LSN TOPIC SUB-TOPIC OBJECTIVES T/L ACTIVITIES T/L AIDS REFERENCE REMARKS
1 5
GENETICS
Gene mutation.
By the end of the lesson, the learner should be able to:
Differentiate between chromosomal and gene mutation.
Identify types of gene mutation.
Q/A to review types of chromosomal mutation;
Using sequence models to show chromosomal mutations.
Discussion.
Models to show Chromosomal mutations.
KLB BK IV. PP 33-35
2 1
EVOLUTION
Meaning of evolution. Theories of origin of life.
By the end of the lesson, the learner should be able to:


Define evolution.
Explain the theories of life.


Brain storming;
Probing questions;
Q/A on creation theory;
Exposition of chemical theory.
text book
KLB BK IV. PP 49-51
2 2
EVOLUTION
Meaning of evolution. Theories of origin of life.
By the end of the lesson, the learner should be able to:


Define evolution.
Explain the theories of life.


Brain storming;
Probing questions;
Q/A on creation theory;
Exposition of chemical theory.
text book
KLB BK IV. PP 49-51
2 3-4
EVOLUTION
Meaning of evolution. Theories of origin of life.
Evidence for organic evolution.
By the end of the lesson, the learner should be able to:


Define evolution.
Explain the theories of life.
Cite evidence for organic evolution.


Brain storming;
Probing questions;
Q/A on creation theory;
Exposition of chemical theory.

Brain storming;
Probing questions;
Exposition;
Discussion.
text book
KLB BK IV. PP 49-51
KLB BK IV. PP 51-59
2 5
EVOLUTION
Evidence for organic evolution.
By the end of the lesson, the learner should be able to:
Cite evidence for organic evolution.
Brain storming;
Probing questions;
Exposition;
Discussion.
text book
KLB BK IV. PP 51-59
3 1
EVOLUTION
Comparative anatomy and homologous structures.
By the end of the lesson, the learner should be able to:
Define divergent evolution.
Give examples of homologous structures.
Examine forelimbs of vertebrates;
Discuss adaptations and use of the limbs.
Forelimbs of vertebrates.
KLB BK IV. PP 59-63
3 2
EVOLUTION
Comparative anatomy and homologous structures.
By the end of the lesson, the learner should be able to:
Define divergent evolution.
Give examples of homologous structures.
Examine forelimbs of vertebrates;
Discuss adaptations and use of the limbs.
Forelimbs of vertebrates.
KLB BK IV. PP 59-63
3 3-4
EVOLUTION
Comparative anatomy and homologous structures. (contd)
By the end of the lesson, the learner should be able to:
Define divergent evolution.
Give examples of homologous structures.
Examine forelimbs of vertebrates;
Discuss adaptations and use of the limbs.
Forelimbs of vertebrates.
KLB BK IV. PP 59-63
3 5
EVOLUTION
Convergent evolution and analogous structures.
By the end of the lesson, the learner should be able to:
Define convergent evolution.
Give examples of analogous structures.
Give examples of vestigial structures.
Examine wings of insects; wings of birds / bat.
Discuss observations.
Wings of insects, wings of birds / bat.
KLB BK IV. PP 63-64
4 1
EVOLUTION
Convergent evolution and analogous structures.(contd)
By the end of the lesson, the learner should be able to:
Define convergent evolution.
Give examples of analogous structures.
Give examples of vestigial structures.
Examine wings of insects; wings of birds / bat.
Discuss observations.
Wings of insects, wings of birds / bat.
KLB BK IV. PP 63-64
4 2
EVOLUTION
Convergent evolution and analogous structures.(contd)
By the end of the lesson, the learner should be able to:
Define convergent evolution.
Give examples of analogous structures.
Give examples of vestigial structures.
Examine wings of insects; wings of birds / bat.
Discuss observations.
Wings of insects, wings of birds / bat.
KLB BK IV. PP 63-64
4 3-4
EVOLUTION
Larmack?s theory of evolution.
Darwin?s theory of natural selection.
By the end of the lesson, the learner should be able to:
Explain Larmack?s theory of evolution.
Explain Darwin?s theory of natural selection.
Cite examples of natural selection in action.
Expositions and explanations.

Expositions and explanations;
Probing questions;
Topic review.
text book
KLB BK IV. P 67
KLB BK IV. PP 67-72
4 5
EVOLUTION
Darwin?s theory of natural selection.
By the end of the lesson, the learner should be able to:
Explain Darwin?s theory of natural selection.
Cite examples of natural selection in action.
Expositions and explanations;
Probing questions;
Topic review.
text book
KLB BK IV. PP 67-72
5 1
RECEPTION, RESPONSE & CO-ORDINATION
Meaning of stimulus, response and irritability. Tactic responses.
By the end of the lesson, the learner should be able to:




Define of stimulus, response and irritability.
Explain the need for sensitivity and response.
Identify types of tactics responses.




Brain storming;
Exposition;
Group experiments-chemotaxis in termites;
Discussion.




Brad crumbs, termites, dry sand, moth balls.




KLB BK IV. PP 73-74
5 2
RECEPTION, RESPONSE & CO-ORDINATION
Meaning of stimulus, response and irritability. Tactic responses.
By the end of the lesson, the learner should be able to:




Define of stimulus, response and irritability.
Explain the need for sensitivity and response.
Identify types of tactics responses.




Brain storming;
Exposition;
Group experiments-chemotaxis in termites;
Discussion.




Brad crumbs, termites, dry sand, moth balls.




KLB BK IV. PP 73-74
5 3-4
RECEPTION, RESPONSE & CO-ORDINATION
Tropism and types of tropism.
By the end of the lesson, the learner should be able to:
Identify types of tropism.
State differences between tropisms and taxes.
Examine previous plant set ?ups on response to light, gravity;
Probing questions and discussion.
Seedlings, klinostat, corked beaker.
KLB BK IV. PP 74-78
5 5
RECEPTION, RESPONSE & CO-ORDINATION
Nastic responses.
By the end of the lesson, the learner should be able to:
Identify types of nastic responses
Q/A and discussion.
text book
KLB BK IV. PP 78-80
6 1
RECEPTION, RESPONSE & CO-ORDINATION
Role of auxins in tropisms.
By the end of the lesson, the learner should be able to:
Explain the role of auxins in tropisms.
Examine previous plant set ?ups on response to light, gravity; contact;
Probing questions and discussion.
text book
KLB BK IV. PP 80-83
6 2
RECEPTION, RESPONSE & CO-ORDINATION
Role of auxins in tropisms.
By the end of the lesson, the learner should be able to:
Explain the role of auxins in tropisms.
Examine previous plant set ?ups on response to light, gravity; contact;
Probing questions and discussion.
text book
KLB BK IV. PP 80-83
6 3-4
RECEPTION, RESPONSE & CO-ORDINATION
Role of auxins in tropisms.
Response and Co-ordination in animals. The nervous system.
By the end of the lesson, the learner should be able to:
Explain the role of auxins in tropisms.




State components of the nervous system.
Describe the structure of nerve cells.
Examine previous plant set ?ups on response to light, gravity; contact;
Probing questions and discussion.




Descriptive and expository approaches.
text book




Illustrative diagrams.
KLB BK IV. PP 80-83
KLB BK IV. PP 84-85
6 5
RECEPTION, RESPONSE & CO-ORDINATION
Response and Co-ordination in animals. The nervous system.
By the end of the lesson, the learner should be able to:




State components of the nervous system.
Describe the structure of nerve cells.




Descriptive and expository approaches.




Illustrative diagrams.
KLB BK IV. PP 84-85
7 1
RECEPTION, RESPONSE & CO-ORDINATION
Types of neurons. The brain.
By the end of the lesson, the learner should be able to:
Identify types of neurons.

Describe structure of the human brain.
Descriptive and expository approaches.
Illustrative diagrams.
KLB BK IV. PP 85-88
7 1-2
RECEPTION, RESPONSE & CO-ORDINATION
Types of neurons. The brain.
By the end of the lesson, the learner should be able to:
Identify types of neurons.

Describe structure of the human brain.
Descriptive and expository approaches.
Illustrative diagrams.
KLB BK IV. PP 85-88
7-8

Midterm

8 2
RECEPTION, RESPONSE & CO-ORDINATION
Reflex actions.
By the end of the lesson, the learner should be able to:
Differentiate between simple and conditioned reflex actions.
Illustrate a simple reflex arc.
Probing questions on differences between simple and conditioned reflex actions.
Illustrative diagrams.
KLB BK IV. PP 88-90
8 3-4
RECEPTION, RESPONSE & CO-ORDINATION
Transmission of a nerve impulse.
By the end of the lesson, the learner should be able to:
Describe the transmission of a nerve impulse.
Descriptive and expository approaches.
Illustrative diagrams.
KLB BK IV. PP 90-93
8 5
RECEPTION, RESPONSE & CO-ORDINATION
The endocrine system.
By the end of the lesson, the learner should be able to:
Identify components of endocrine system.
Compare endocrine system. With nervous system.
Discussion; tabulate the differences.
Illustrative diagrams.
KLB BK IV. PP 93-6
9 1
RECEPTION, RESPONSE & CO-ORDINATION
The mammalian eye.
By the end of the lesson, the learner should be able to:
Identify major parts of the human eye.
Explain image formation and interpretation in the eye.
Brain storming;
Discussion with probing questions.
Chart- the human eye.
KLB BK IV. PP 93-100
9 2
RECEPTION, RESPONSE & CO-ORDINATION
The mammalian eye.
By the end of the lesson, the learner should be able to:
Identify major parts of the human eye.
Explain image formation and interpretation in the eye.
Brain storming;
Discussion with probing questions.
Chart- the human eye.
KLB BK IV. PP 93-100
9 3-4
RECEPTION, RESPONSE & CO-ORDINATION
The mammalian eye.
Accommodation of the eye.
By the end of the lesson, the learner should be able to:
Identify major parts of the human eye.
Explain image formation and interpretation in the eye.
Explain the role of ciliary muscles in accommodation of the eye.
Brain storming;
Discussion with probing questions.
Discussion with probing questions,
Drawing illustrative diagrams.
Chart- the human eye.
Chart- focusing far and near points.
KLB BK IV. PP 93-100
KLB BK IV. PP 100-1
9 5
RECEPTION, RESPONSE & CO-ORDINATION
Accommodation of the eye.
By the end of the lesson, the learner should be able to:
Explain the role of ciliary muscles in accommodation of the eye.
Discussion with probing questions,
Drawing illustrative diagrams.
Chart- focusing far and near points.
KLB BK IV. PP 100-1
10 1
RECEPTION, RESPONSE & CO-ORDINATION
Defects of vision and their correction.
By the end of the lesson, the learner should be able to:
Identify defects of vision.
Explain correction of vision defects.
Detailed discussion with probing questions;
Drawing illustrative diagrams.
Illustrative diagrams.
KLB BK IV. PP 101-4
10 2
RECEPTION, RESPONSE & CO-ORDINATION
The human ear.
By the end of the lesson, the learner should be able to:
Identify major parts of the human ear.

Descriptive and expository approaches.
Drawn diagrams.
Illustrative diagrams.
KLB BK IV. PP 104-5
10 3-4
RECEPTION, RESPONSE & CO-ORDINATION
Hearing.
By the end of the lesson, the learner should be able to:
Explain how the ear perceives sound.
Descriptive and expository approaches.
Illustrative diagrams.
KLB BK IV. P 106
10 5
RECEPTION, RESPONSE & CO-ORDINATION
Body balance and posture.
By the end of the lesson, the learner should be able to:
Explain how the ear maintains body balance and posture.
Descriptive and expository approaches.
KLB BK IV. PP 107-8
11 1
RECEPTION, RESPONSE & CO-ORDINATION
Defects of the ear.
By the end of the lesson, the learner should be able to:
Identify some defects of the ear.
Descriptive and expository approaches.
text book
KLB BK IV.
P 108
11 2
SUPPORT & MOVEMENT IN PLANTS AND ANIMALS
Importance of support and movement in plants.
By the end of the lesson, the learner should be able to:





Explain the importance of support and movement in plants.





Brain storming;
Probing questions;
Discussion.
text book
KLB BK IV. PP 111-2
11 3-4
SUPPORT & MOVEMENT IN PLANTS AND ANIMALS
Arrangement of tissues in a monocotyledonous stem.
Arrangement of tissues in a dicotyledonous stem.
By the end of the lesson, the learner should be able to:
Draw and label a transverse section of a monocotyledonous stem.
Draw and label a transverse section of a dicotyledonous stem.
Draw and label a transverse section of herbaceous and woody stems.

Examine transverse section of a monocotyledonous stem.
Examine transverse section of a dicotyledonous stem, herbaceous and woody stems.
Monocotyledo-nous stem, eg. tradescantia, microscope,
Razors.
Herbaceous stem, microscope, slides,
Razors.
KLB BK IV. PP111-2.
KLB BK IV. PP 111-5
11 5
SUPPORT & MOVEMENT IN PLANTS AND ANIMALS
Arrangement of tissues in a dicotyledonous stem.
By the end of the lesson, the learner should be able to:
Draw and label a transverse section of a dicotyledonous stem.
Draw and label a transverse section of herbaceous and woody stems.

Examine transverse section of a dicotyledonous stem, herbaceous and woody stems.
Herbaceous stem, microscope, slides,
Razors.
KLB BK IV. PP 111-5
12 1
SUPPORT & MOVEMENT IN PLANTS AND ANIMALS
Stem tissues.
By the end of the lesson, the learner should be able to:
Identify some stem tissues.
Explain the role of stem tissues.
Drawing and labeling diagrams;
Discussion.
Illustrative diagrams.
KLB BK IV. PP 113-5
12 2
SUPPORT & MOVEMENT IN PLANTS AND ANIMALS
Stem tissues.
By the end of the lesson, the learner should be able to:
Identify some stem tissues.
Explain the role of stem tissues.
Drawing and labeling diagrams;
Discussion.
Illustrative diagrams.
KLB BK IV. PP 113-5
12 3-4
SUPPORT & MOVEMENT IN PLANTS AND ANIMALS
Wilting in plants.
The exoskeleton.
By the end of the lesson, the learner should be able to:
Compare the rate of wilting of herbaceous and woody stems.
Account for difference in rate of water loss.

Describe the structure of the exoskeleton.
Uproot herbaceous and woody plants;
Observe tem for about 30 min;
Brief discussion.

Examine movement of a live arthropod;
Observe muscles of the hind limb of a grasshopper;
Relate the observations to the function of the exoskeleton.

A live arthropod,
E.g. grasshopper, millipede.
KLB BK IV. P 116
KLB BK IV. PP 116-7
12 5
SUPPORT & MOVEMENT IN PLANTS AND ANIMALS
The exoskeleton.
By the end of the lesson, the learner should be able to:
Describe the structure of the exoskeleton.
Examine movement of a live arthropod;
Observe muscles of the hind limb of a grasshopper;
Relate the observations to the function of the exoskeleton.
A live arthropod,
E.g. grasshopper, millipede.
KLB BK IV. PP 116-7
13 1
SUPPORT & MOVEMENT IN PLANTS AND ANIMALS
The endoskeleton.
By the end of the lesson, the learner should be able to:
Describe the structure of the endoskeleton.




Observe skeleton of a vertebrate;
Compare it with an exoskeleton.
Discuss the contrasting features.
The human skeleton.




KLB BK IV. PP 117-8
13 2
SUPPORT & MOVEMENT IN PLANTS AND ANIMALS
The endoskeleton.
By the end of the lesson, the learner should be able to:
Describe the structure of the endoskeleton.




Observe skeleton of a vertebrate;
Compare it with an exoskeleton.
Discuss the contrasting features.
The human skeleton.




KLB BK IV. PP 117-8
13 3
SUPPORT & MOVEMENT IN PLANTS AND ANIMALS
The endoskeleton.
By the end of the lesson, the learner should be able to:
Describe the structure of the endoskeleton.




Observe skeleton of a vertebrate;
Compare it with an exoskeleton.
Discuss the contrasting features.
The human skeleton.




KLB BK IV. PP 117-8

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