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SCHEME OF WORK
Biology
Form 3 2025
TERM I
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WK LSN TOPIC SUB-TOPIC OBJECTIVES T/L ACTIVITIES T/L AIDS REFERENCE REMARKS
1 1
EXCRETION AND HOMEOSTASIS
Introduction- Definition and importance of homeostasis and excretion.
Excretion in plants.
By the end of the lesson, the learner should be able to:


To define homeostasis and excretion.
To explain necessity of excretion in plants and animals.


Q/A: Definitions of digestion, ingestion and egestion, secretion and excretion.

Discuss importance of excretion in plants and animals.
text book
Some plants excretory products.
K.L.B. BK 2
PP. 83-84
1 2
EXCRETION AND HOMEOSTASIS
Excretion and homeostasis in unicellular organisms.
By the end of the lesson, the learner should be able to:
Describe excretion and homeostasis in an amoeba and a paramecium.
Q/A: Review diffusion, structure of an amoeba.
Discuss excretion and homeostasis in an amoeba and a paramecium.
text book
K.L.B. BK 2
PP. 84-85
1 3
EXCRETION AND HOMEOSTASIS
Excretion and homeostasis in animals.
By the end of the lesson, the learner should be able to:
To identify excretory organs in various animals.
Exposition and discussion.
Observe drawings of various animals showing excretory organs.
Specimens of platyhelmin-thes, annelida, insects.
K.L.B. BK 2
P. 85
1 4-5
EXCRETION AND HOMEOSTASIS
The mammalian skin.
The lungs.
By the end of the lesson, the learner should be able to:
Draw and label the structure of the mammalian skin.
To describe functions of parts of the mammalian skin.

To explain the role of lungs as excretory organs.

Exposition and discussion.
Permanent slides of mammalian skin.


Chart/ model- Mammalian lungs.
K.L.B. BK 2
PP. 86-87
K.L.B. BK 2
P. 87
2 1
EXCRETION AND HOMEOSTASIS
The kidneys structure.
By the end of the lesson, the learner should be able to:
To describe the external structure of kidney.
To describe the internal structure of the kidney.
Observe external features of a kidney.
Observe internal drawing and labeling of the kidney.
Wall-Charts?internal organs of a kidney.
K.L.B. BK 2
PP. 89-90
2 2
EXCRETION AND HOMEOSTASIS
The nephron.
By the end of the lesson, the learner should be able to:
Describe features of the nephron.
Discuss features of the nephron.
Draw structure of the nephron.
Label the diagram.
Chart?Kidney nephron.
2 3
EXCRETION AND HOMEOSTASIS
Urine formation.
The loop of Henle.
Kidney diseases and disorders.
By the end of the lesson, the learner should be able to:
To explain formation of urine.
Detailed discussion.
chart
Chart-
The nephron.
text book
K.L.B. BK 2 PP 90
2 4-5
EXCRETION AND HOMEOSTASIS
The Liver.
Deamination.
Other functions of the liver.
Liver disorders.
Homeostasis.
By the end of the lesson, the learner should be able to:
To draw and label a diagram of the liver.
To state and explain other functions of the liver.
Drawing and labeling diagram of the liver.
Probing questions.
Discussion
Chart-Structure of the liver
text book
K.L.B. BK 2 PP 93-94
K.L.B. BK 2 PP 95-96
3 1
EXCRETION AND HOMEOSTASIS
The feedback mechanism.
The hypothalamus.
By the end of the lesson, the learner should be able to:
To differentiate between positive and negative feedback and state their roles in maintaining the desirable point.
Schematic representation of feedbacks.

Exposition and discussion.
Chart-
Schematic diagram of feedback mechanism
text book
K.L.B. BK 2 PP 97-98
3 2
EXCRETION AND HOMEOSTASIS
The skin and thermoregulation.
Blood vessels and their functions in thermo-regulation.
By the end of the lesson, the learner should be able to:
To explain the function of the skin in thermoregulation.
Exposition and discussion.
text book
K.L.B. BK 2 PP 98
3 3
EXCRETION AND HOMEOSTASIS
Homeostatic behavioral activities.
Osmoregulation.
By the end of the lesson, the learner should be able to:
To state and explain various homeostatic behavioral activities.
Discussion on control of body temperature.
Probing questions.
text book,video
text book
K.L.B. BK 2 PP 99
3 4-5
EXCRETION AND HOMEOSTASIS
CLASSIFICATION II
Blood sugar.
Diabetes.
Principles of classification of living organisms...
By the end of the lesson, the learner should be able to:
To discuss effects of insufficient/ excess sugar in the blood.

To explain regulation of blood sugar.


Explain the importance of classification of organisms.
Discuss the general principles of classification.
Identify major taxonomic units.
Detailed discussion.



Detailed discussion.
Q/A: To review Classification I.

Discussion of principles of classification of organisms.

Q/A: Major taxonomic units.
text book
Chart- Taxonomic units.
K.L.B. BK 2 PP 101-102
KLB BK III.
PP 1-2. CERTIFICATE PG 1 
4 1
CLASSIFICATION II
Binomial Nomenclature.
By the end of the lesson, the learner should be able to:
To define a species.
To explain features of a species.
To explain principles of binomial nomenclature.
Probing questions leading to definition of a species.
Give examples of breeds and varieties.
Discuss the double- naming system and the underlying features.
Chart- Examples of generic and specific names of organisms.
KLB BK III.P 2. CERTIFICATE PG 3
4 2
CLASSIFICATION II
Binomial Nomenclature.
By the end of the lesson, the learner should be able to:
To define a species.
To explain features of a species.
To explain principles of binomial nomenclature.
Probing questions leading to definition of a species.
Give examples of breeds and varieties.
Discuss the double- naming system and the underlying features.
Chart- Examples of generic and specific names of organisms.
KLB BK III.P 2. CERTIFICATE PG 3
4 3
CLASSIFICATION II
Animal Kingdoms. Kingdom Monera.
By the end of the lesson, the learner should be able to:
Identify the five animal kingdoms.

State characteristics of members of kingdom Monera.
To identify and draw various bacteria.
To explain how bacteria affect our lives.
Expository approach -The teacher will expose the five kingdoms.
Discussion- General characteristics of unicellular and microscopic organisms.
Drawing and labeling a bacterium.

Q/A: Economic importance of bacteria.
Chart- Types of bacteria
KLB BK III.P 3. CERTIFICATE PG 4
4 4-5
CLASSIFICATION II
Kingdom Protoctista.
Organisms with varied forms.
By the end of the lesson, the learner should be able to:
To give examples of members of kingdom Protoctista.
To state general characteristics of members of kingdom Protoctista.

To draw and label an amoeba, paramecium, spirogyra, e.t.c.
Teacher leads in a discussion.
Drawing and labelling organisms with varied forms.
chart
Wall charts.
KLB BK III.
PP 4-5. CERTIFICATE PG 8
KLB BK III. P 4-5. CERTIFICATE PG 9
5 1
CLASSIFICATION II
Organisms in pond water.
By the end of the lesson, the learner should be able to:
To identify organisms in pond water.
Examine a drop of pond water on a glass slide under a microscope.
Draw diagrams of organisms observed.
Compare the observed organisms with those previously drawn and labelled.
Microscope
Water dropper
Pond water
Glass slides.
KLB BK III. P. 4-5. CERTIFICATE PG 10
5 2
CLASSIFICATION II
Kingdom Fungi. Characteristics of Kingdom Fungi.
By the end of the lesson, the learner should be able to:
To give examples of members of kingdom fungi.
To discuss economic importance of fungi.
To state general characteristics of fungi.
Detailed discussion.
Exposition of new concepts/ terms.
Mushrooms,
Yeast,
Bread mould.
KLB BK III. P 6. CERTIFICATE PG 11
5 3
CLASSIFICATION II
Kingdom Fungi. Characteristics of Kingdom Fungi.
By the end of the lesson, the learner should be able to:
To give examples of members of kingdom fungi.
To discuss economic importance of fungi.
To state general characteristics of fungi.
Detailed discussion.
Exposition of new concepts/ terms.
Mushrooms,
Yeast,
Bread mould.
KLB BK III. P 6. CERTIFICATE PG 11
5 4-5
CLASSIFICATION II
Diagrams of Fungi.
Kingdom Plantae. General characteristics.
By the end of the lesson, the learner should be able to:
To draw and label various fungi.
State general characteristics of plants.
Examine bread mould.
Draw and label diagrams of various fngi.
Q/A: Compare plants with the aforementioned kingdoms, and then list down characteristics of plants.
Wall charts,
Bread mould,
Yeast,
Edible mushroom.
KLB BK III. P 6. CERTIFICATE PG 12
KLB BK III. P 7. CERTIFICATE PG 13
6 1
CLASSIFICATION II
Division Bryophyta External structure of a Bryophyta.
By the end of the lesson, the learner should be able to:
State general characteristics of Bryophyta.
To draw and label external features of an identified Bryophyta.
To identify features of Bryophyta.
Teacher leads in a discussion. Students examine moss plant under a hand lens, then
Draw and label the moss plant.
Moss plant,
Hand lens,
Slide.
KLB BK III. P 7. CERTIFICATE PG 14
6 2
CLASSIFICATION II
Division Pteridophyta.
By the end of the lesson, the learner should be able to:
To state general characteristics of Pteridophytes.
To draw and label external features of Pteridophytes.
Teacher leads in a discussion on characteristics of Pteridophytes.
Class experiments: To observe a live or preserved fern.
To draw and label the fern.
A live or preserved fern.
KLB BK III. P 7. CERTIFICATE PG 15
6 3
CLASSIFICATION II
Division Pteridophyta.
By the end of the lesson, the learner should be able to:
To state general characteristics of Pteridophytes.
To draw and label external features of Pteridophytes.
Teacher leads in a discussion on characteristics of Pteridophytes.
Class experiments: To observe a live or preserved fern.
To draw and label the fern.
A live or preserved fern.
KLB BK III. P 7. CERTIFICATE PG 15
6 4-5
CLASSIFICATION II
Division Spermatophyta.
Features of Spermatophytes.
By the end of the lesson, the learner should be able to:
To state general characteristics of spermatophytes.


To identify features of spermatophytes.
Teacher leads in a discussion on spermatophytes.
Class experiments: To examine a complete specimen of a bean plant with ponds/ maize plant/ a twig of cypress.
text book
Complete specimens of bean plant with ponds/ maize plant/ a twig of cypress.
KLB BK III. P 9. CERTIFICATE PG 16
KLB BK III. P 9. CERTIFICATE PG16
7 1
CLASSIFICATION II
Sub-division Gymnospermatophyta.
By the end of the lesson, the learner should be able to:
To state general characteristics of gymnospermatophyta.
Detailed discussion.
text book
KLB BK III. P 9. CERTIFICATE PG16
7 2
CLASSIFICATION II
Subdivision Angiospermaphyta.
By the end of the lesson, the learner should be able to:
To state general characteristics of angiospermaphyta.
Detailed discussion.
Q/A: Comparing gymnospermatophyta and angiospermaphyta.
text book
KLB BK III. P 10. CERTIFICATE PG 16
7 3
CLASSIFICATION II
Subdivision Angiospermaphyta.
By the end of the lesson, the learner should be able to:
To state general characteristics of angiospermaphyta.
Detailed discussion.
Q/A: Comparing gymnospermatophyta and angiospermaphyta.
text book
KLB BK III. P 10. CERTIFICATE PG 16
7 4-5
CLASSIFICATION II
Class Monocotyledonae.
Class Dicotyledonae.
By the end of the lesson, the learner should be able to:
To list down characteristics of Monocotyledonae.
To list down characteristics of Dicotyledonae.
Class experiments: Examine maize plant/ wheat/ grass/ sugarcane.
Discuss external features of the plants.


Class experiments: Examine external features of bean plant/ black jack/ tea.
Discuss their external features.
Maize plant/ wheat/ grass/ sugarcane.
Bean plant/ black jack/ tea.
KLB BK III. P 11. CERTIFICATE PG 17
8 1
CLASSIFICATION II
Kingdom Animalia.
By the end of the lesson, the learner should be able to:
To state characteristics of kingdom Animalia.
Q/A: To review general characteristics of animals as compared to those of plants.
text book
KLB BK III. P 12. CERTIFICATE PG 18
8 2
CLASSIFICATION II
Phyllum Arthropoda.
By the end of the lesson, the learner should be able to:
To state general characteristics of Arthropoda.
Q/A: General characteristics of Arthropoda.
KLB BK III. P 12. CERTIFICATE PG 19
8-9

MID-TERM BREAK
9 2
CLASSIFICATION II
Class Crustacea.
By the end of the lesson, the learner should be able to:
To list down external features of a crab/ crayfish.
Examine preserved specimens of a crab/ crayfish and identify external features.
Draw and label diagrams.
Discuss their general characteristics.
Specimens of a crab/ crayfish.
KLB BK III. P 13. CERTIFICATE PG 21
9 3
CLASSIFICATION II
Class Crustacea.
By the end of the lesson, the learner should be able to:
To list down external features of a crab/ crayfish.
Examine preserved specimens of a crab/ crayfish and identify external features.
Draw and label diagrams.
Discuss their general characteristics.
Specimens of a crab/ crayfish.
KLB BK III. P 13. CERTIFICATE PG 21
9 4-5
CLASSIFICATION II
Class Chilopoda.
Class Diplopoda.
By the end of the lesson, the learner should be able to:
To describe external features of a centipede.
To describe external features of a milipede.
Examine a centipede.
Draw and label a centipede.
Discuss general characteristics of Chilopoda comparing them to those of other members of the kingdom Animalia.

Examine a milipede.
Draw and label a milipede.
Discuss general characteristics of diplopoda comparing them to those of other members of the kingdom Animalia.
A centipede.

A milipede.
KLB BK III. P 14. CERTIFICATE PG 20
KLB BK III. P 15. CERTIFICATE PG 20
10 1
CLASSIFICATION II
Class Arachnida.
By the end of the lesson, the learner should be able to:
To describe external features of mites, spiders, scorpions, ticks.
Examine specimens of freshly killed/ preserved arachnids.
Q/A: Differences between arachnids and members of other classes.
Discuss general characteristics of Arachnida.
Specimens of freshly killed/ preserved arachnids.
KLB BK III. P 15. CERTIFICATE PG 20
10 2
CLASSIFICATION II
Class Insecta.
By the end of the lesson, the learner should be able to:
To describe external features of common insects.
Examine live/ freshly killed specimens of ground beetle, honeybee, termite, e.t.c.
List down general characteristics of insecta.
Discuss economic importance of insects.
Live/ freshly killed specimens of ground beetle, honey-bee, termite, e.t.c.
KLB BK III. P 15. CERTIFICATE PG 21
10 3
CLASSIFICATION II
Class Insecta.
By the end of the lesson, the learner should be able to:
To describe external features of common insects.
Examine live/ freshly killed specimens of ground beetle, honeybee, termite, e.t.c.
List down general characteristics of insecta.
Discuss economic importance of insects.
Live/ freshly killed specimens of ground beetle, honey-bee, termite, e.t.c.
KLB BK III. P 15. CERTIFICATE PG 21
10 4-5
CLASSIFICATION II
Phyllum Chordata.
Class Pisces.
By the end of the lesson, the learner should be able to:
To identify general characteristics of chordates.
To draw and label external features of a (tilapia) fish.
Q/A: Identify classes of phylum chordata.
Discussion: characteristics of chordates.

Exposition- Teacher exposes new concepts pertaining to characteristics of fish.

Chart tilapia fish.
KLB BK III. PP 16-18. CERTIFICATE PG 22
KLB BK III. P 18. CERTIFICATE PG 22
11 1
CLASSIFICATION II
Class Amphibia.
By the end of the lesson, the learner should be able to:
To compare observable features of a tilapia fish and those of a frog.
Group experiments- Observing specimens and placing them in their respective classes.
Preserved specimens ? fish, amphibians.
KLB BK III. P 18. CERTIFICATE PG 23
11 2
CLASSIFICATION II
Class Reptilia.
By the end of the lesson, the learner should be able to:
To state general characteristics of reptilia.
Q/A: Comparing reptiles and amphibians/ aves
Discussion: General characteristics of reptilia.
KLB BK III. P 18. CERTIFICATE PG 24
11 3
CLASSIFICATION II
Class Reptilia.
By the end of the lesson, the learner should be able to:
To state general characteristics of reptilia.
Q/A: Comparing reptiles and amphibians/ aves
Discussion: General characteristics of reptilia.
KLB BK III. P 18. CERTIFICATE PG 24
11 4-5
CLASSIFICATION II
Class Aves.
Class Mammalia.
By the end of the lesson, the learner should be able to:
To state general characteristics of aves.
To state general characteristics of Mammalia.
Q/A: Comparing reptiles and amphibians/ aves
Discussion: General characteristics of reptilia.

Q/A: Examples of egg laying mammals, pouched mammals, primates, etc.
Chart- Diagrams of birds.


Diagrams of various mammals.
KLB BK III. P 19. CERTIFICATE PG 24
KLB BK III. P 20. CERTIFICATE PG  25
12 1
CLASSIFICATION II
Dichotomous key.
By the end of the lesson, the learner should be able to:
To explain the rules used in constructing a dichotomous key.
Teacher exposes features of a dichotomous key.
KLB BK III. P 23. CERTIFICATE PG 27
12 2
CLASSIFICATION II
Features for identifying animals / plants.
By the end of the lesson, the learner should be able to:
To list identification features for animals/ plants.
Teacher exposes features for identifying animals/ plants.
KLB BK III. P 24. CERTIFICATE PG 27
12 3
CLASSIFICATION II
Features for identifying animals / plants.
By the end of the lesson, the learner should be able to:
To list identification features for animals/ plants.
Teacher exposes features for identifying animals/ plants.
KLB BK III. P 24. CERTIFICATE PG 27
12 4-5
CLASSIFICATION II
Examples of dichotomous keys.
Construction of dichotomous keys.
By the end of the lesson, the learner should be able to:
To construct dichotomous keys using leaves, stems, e.t.c.
To construct a guided dichotomous key of a given number of steps.
To use a constructed dichotomous key to identify given specimens.
To construct own dichotomous key.
Teacher leads through constructed dichotomous keys.

Supervised exercise.

Written exercise.

Exercise review.
Chart- Constructed dichotomous keys.

Plants from different families.

Different plant species.
KLB BK III. P 24. CERTIFICATE PG28
KLB BK III. PP 24-30 CERTIFICATE PG30
13

END OF TERM EXAMINATION AND CLOSSING OF SCHOOL

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