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SCHEME OF WORK
Agriculture
Form 4 2025
TERM II
School


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WK LSN TOPIC SUB-TOPIC OBJECTIVES T/L ACTIVITIES T/L AIDS REFERENCE REMARKS
3 1
FARM POWER & MACHINERY.
Sources of power in the farm.
By the end of the lesson, the learner should be able to:


Describe various sources of power in the farm.
State merits & demerits of each source of power.




Q/A & discussion: animal power, wind power, waterpower, biogas, solar radiation, and fossil fuel.
solar,biogas,



KLB BK IV
Pg 50-56

Longhorn Bk IV
Pg 42-53
3 2
FARM POWER & MACHINERY.
The tractor: Petrol & diesel engines.
By the end of the lesson, the learner should be able to:
Identify major parts of the tractor petrol & diesel engines.
Exposition of new concepts, drawing illustrative diagrams.
Chart- petrol engine & diesel engine.
KLB BK IV
Pg 57-58
Longhorn Bk IV
Pg 53-54
3 3
FARM POWER & MACHINERY.
The tractor: Petrol & diesel engines.
By the end of the lesson, the learner should be able to:
Identify major parts of the tractor petrol & diesel engines.
Exposition of new concepts, drawing illustrative diagrams.
Chart- petrol engine & diesel engine.
KLB BK IV
Pg 57-58
Longhorn Bk IV
Pg 53-54
3 4
FARM POWER & MACHINERY.
The four-stroke cycle engine.
By the end of the lesson, the learner should be able to:
Describe the four strokes in an engine
State merits & demerits of the four-stroke cycle engine.
Exposition of new concepts, drawing illustrative diagrams.
Diagrams - The four-stroke cycle.
KLB BK IV
Pg 58-61

Longhorn Bk IV
Pg 54-55
4 1
FARM POWER & MACHINERY.
The two- stroke cycle engine. Structural and functional differences between petrol and diesel engines.
By the end of the lesson, the learner should be able to:
Describe the two strokes in a cycle.
State merits & demerits of two-stroke cycle engine.

State structural and functional differences between petrol and diesel engines.
Exposition of new concepts,
drawing; illustrative diagrams;

Discussion.
two stroke engine diagram
KLB BK IV
Pg 61-63


Longhorn Bk IV
Pg 56-57
4 2
FARM POWER & MACHINERY.
Petrol fuel system of a tractor.
By the end of the lesson, the learner should be able to:
Describe the petrol fuel system of a tractor.
State maintenance practices of a petrol fuel system of a tractor.
Block diagram: petrol engine fuel system.
Discussion.
diagram of a petrol fuel system
KLB BK IV
Pg 63-64
Longhorn Bk IV
Pg 60-61
4 3
FARM POWER & MACHINERY.
Diesel fuel system of a tractor.
By the end of the lesson, the learner should be able to:
Describe the diesel fuel system of a tractor.
State maintenance practices of a diesel fuel system of a tractor.
Block diagram: petrol engine fuel system.
Discussion.
diagram of a diesel fuel system
KLB BK IV
Pg 64-65
Longhorn Bk IV
Pg 60-61
4 4
FARM POWER & MACHINERY.
Diesel fuel system of a tractor.
By the end of the lesson, the learner should be able to:
Describe the diesel fuel system of a tractor.
State maintenance practices of a diesel fuel system of a tractor.
Block diagram: petrol engine fuel system.
Discussion.
diagram of a diesel fuel system
KLB BK IV
Pg 64-65
Longhorn Bk IV
Pg 60-61
5 1
FARM POWER & MACHINERY.
Electrical system of a tractor.
By the end of the lesson, the learner should be able to:
Name the components in the electrical system of a tractor.
Highlight methods of maintaining a tractor battery.
Refer to diagram for electrical system of a tractor;
Brief discussion.
Chart-  electrical system.
KLB BK IV
Pg 65-67

Longhorn Bk IV
Pg 61
5 2
FARM POWER & MACHINERY.
Tractor ignition system.
By the end of the lesson, the learner should be able to:
Name the components of tractor ignition system.
Correct some common faults of ignition system.
Discuss maintenance practices of the ignition system.
Refer to a diagram for ignition system of a tractor;
Brief discussion.
Chart - ignition system.
KLB BK IV
Pg 67-69

Longhorn Bk IV
Pg 62-63
5 3
FARM POWER & MACHINERY.
Tractor cooling system.
By the end of the lesson, the learner should be able to:
Briefly describe air-cooled and water-cooled systems.
Discuss proper maintenance of cooling system.
Brief discussion.
Chart- water cooling system.
KLB BK IV
Pg 69-71

Longhorn Bk IV
Pg 63-64
5 4
FARM POWER & MACHINERY.
Lubrication system of an engine.
By the end of the lesson, the learner should be able to:
Describe the lubrication system of an engine.
Outline importance of maintaining the lubrication system.
Exposition;
Brief discussion.
diagram of a lubrication system
KLB BK IV
Pg 71-72
Longhorn Bk IV
Pg 64-5
6 1
FARM POWER & MACHINERY.
Power transmission system of an engine.
By the end of the lesson, the learner should be able to:
Explain the function of power transmission system.
State the function of the clutch, gearbox and the differential.
Teacher exposes the parts of power transmission system.
Refer to diagrams to identify parts of a power transmission system;
Brief discussion.
Chart- power transmission
system.
KLB BK IV
Pg 72-76

Longhorn Bk IV
Pg 64-65
6 2
FARM POWER & MACHINERY.
Power transmission system of an engine.
By the end of the lesson, the learner should be able to:
Explain the function of power transmission system.
State the function of the clutch, gearbox and the differential.
Teacher exposes the parts of power transmission system.
Refer to diagrams to identify parts of a power transmission system;
Brief discussion.
Chart- power transmission
system.
KLB BK IV
Pg 72-76

Longhorn Bk IV
Pg 64-65
6 3
FARM POWER & MACHINERY.
Tractor servicing.
By the end of the lesson, the learner should be able to:
Describe tractor servicing and maintenance practices.
Brief discussion.
KLB BK IV
Pg 776-77
Longhorn Bk IV
Pg 65-6
6 4
FARM POWER & MACHINERY.
Tractor drawn implements.
By the end of the lesson, the learner should be able to:
Classify tractor drawn implements on basis of attachment to the tractor.
List down maintenance practices for a trailer.
Teacher?s explanations.


Q/A: maintenance practices.
Charts-
Tractor drawn implements.
KLB BK IV
Pg 77-80

Longhorn Bk IV
Pg 66-7
7 1
FARM POWER & MACHINERY.
Disc plough.
By the end of the lesson, the learner should be able to:
Label parts of a disc plough
List down maintenance practices for a disc plough.
Q/A: review primary and secondary cultivation.

Drawing labeled diagrams.

Q/A & discussion.
Chart- Disc plough
KLB BK IV
Pg 79-80

Longhorn Bk IV
Pg 68-9
7 2
FARM POWER & MACHINERY.
Disc plough.
By the end of the lesson, the learner should be able to:
Label parts of a disc plough
List down maintenance practices for a disc plough.
Q/A: review primary and secondary cultivation.

Drawing labeled diagrams.

Q/A & discussion.
Chart- Disc plough
KLB BK IV
Pg 79-80

Longhorn Bk IV
Pg 68-9
7 3
FARM POWER & MACHINERY.
Mould board plough.
By the end of the lesson, the learner should be able to:
State operational differences between the disc plough and mould board plough.
Chart- Mould board plough
KLB BK IV
Pg 80-82
Longhorn Bk IV
Pg 70-1
7 4
FARM POWER & MACHINERY.
Harrows.
By the end of the lesson, the learner should be able to:
Identify types of harrows and their uses.
List down maintenance practices for harrows.
Drawing diagrams, Q/A & discussion.
harrows 
KLB BK IV
Pg 82-84
Longhorn Bk IV
Pg 72-77
8 1
FARM POWER & MACHINERY.
Other farm implements.
By the end of the lesson, the learner should be able to:
Explain the functional features of subsoilers, ridgers, rotary tillers & mowers.
List down maintenance practices for the
implements.
Exposition & brief discussion.
Excursion & exhibitions.
illustrative video
KLB BK IV
Pg 85-91

Longhorn Bk IV
Pg 78-82
8 2
FARM POWER & MACHINERY.
Other farm implements.
By the end of the lesson, the learner should be able to:
Explain the functional features of subsoilers, ridgers, rotary tillers & mowers.
List down maintenance practices for the
implements.
Exposition & brief discussion.
Excursion & exhibitions.
illustrative video
KLB BK IV
Pg 85-91

Longhorn Bk IV
Pg 78-82
8 3
FARM POWER & MACHINERY.
Animal drawn implements.
By the end of the lesson, the learner should be able to:
Identify parts of animal drawn implements and state their functions.
List down maintenance practices for an ox-plough, an ox-plough, and an ox-cart.
State merits & demerits of using animal-drawn implements compared to tractor power.
Drawing and labeling an ox-plough;
Probing questions;
Discussion.
Chart:
An ox-plough.
KLB BK IV
Pg 91-94


Longhorn Bk IV
Pg 82-83
8-9

Midterm exam and break

9 2
AGRICULTURAL MARKETING & ORGANIZATIONS
Supply & Supply-price relationship.
By the end of the lesson, the learner should be able to:
Define the term supply.
Illustrate supply-price relationship.
Sketching supply-price curves.
Refer to supply schedules.
Discussion.
chart
KLB BK IV
Pg 174-5
Longhorn Bk 4
Pg 144-5
9 3
AGRICULTURAL MARKETING & ORGANIZATIONS
Factors affecting supply of a commodity.
By the end of the lesson, the learner should be able to:
State & explain factors affecting supply of a commodity.
Q/A & detailed discussion.
KLB BK IV
Pg 175-7
Longhorn Bk 4
Pg 145-6
9 4
AGRICULTURAL MARKETING & ORGANIZATIONS
Elasticity of supply (Es).
By the end of the lesson, the learner should be able to:
Define elasticity of supply (Es).
Calculate (Es)
Q/A: review Ed hence defines Es.
Worked examples.
Supervised activity.
chart
KLB BK IV
Pg 177-8
Longhorn Bk 4
Pg 147
10 1
AGRICULTURAL MARKETING & ORGANIZATIONS
Determination of market prices.
By the end of the lesson, the learner should be able to:
Explain how market prices are determined.
Determine the equilibrium or market prices of a commodity in a free market.
Teacher?s explanation.

Q/A : review demand and supply curves.
Plot both curves.
Interpret the graphs.
graph
KLB BK IV
Pg 178-9

Longhorn Bk 4
Pg 149
10 2
AGRICULTURAL MARKETING & ORGANIZATIONS
Determination of market prices.
By the end of the lesson, the learner should be able to:
Explain how market prices are determined.
Determine the equilibrium or market prices of a commodity in a free market.
Teacher?s explanation.

Q/A : review demand and supply curves.
Plot both curves.
Interpret the graphs.
graph
KLB BK IV
Pg 178-9

Longhorn Bk 4
Pg 149
10 3
AGRICULTURAL MARKETING & ORGANIZATIONS
Price control. Marketing and marketing function.
By the end of the lesson, the learner should be able to:
Explain the role of government in price control.

Define marketing and marketing function.describe tingfunction. a market.
Brain storming;
Exposition;
Discussion.
student book
KLB BK IV
Pg 179-183

Longhorn Bk 4
Pg 151
10 4
AGRICULTURAL MARKETING & ORGANIZATIONS
Marketing organizations and agencies. Wholesalers & retailers.
By the end of the lesson, the learner should be able to:



Explain the arbitrage role of a wholesaler.
Identify services provided by retailers.



Brain storming;
Exposition;
Discussion.


KLB BK IV
Pg 183-4

Longhorn Bk 4
Pg 151
11 1
AGRICULTURAL MARKETING & ORGANIZATIONS
Itinerant traders, broker agents & commission agents.
By the end of the lesson, the learner should be able to:
Outline the functions of Itinerant traders, broker agents & commission agents in a market.
Exposition & explanation.
student book
KLB BK IV
Pg 184-5


11 2
AGRICULTURAL MARKETING & ORGANIZATIONS
Itinerant traders, broker agents & commission agents.
By the end of the lesson, the learner should be able to:
Outline the functions of Itinerant traders, broker agents & commission agents in a market.
Exposition & explanation.
student book
KLB BK IV
Pg 184-5


11 3
AGRICULTURAL MARKETING & ORGANIZATIONS
Packers and processors, marketing boards & auctioneers.
By the end of the lesson, the learner should be able to:
Outline functions of packers and processors, marketing boards & auctioneers in a market.
Q/A & detailed discussion.
KLB BK IV
Pg 185-6
11 4
AGRICULTURAL MARKETING & ORGANIZATIONS
Special characteristics of Agricultural products.
By the end of the lesson, the learner should be able to:
Describe bulkiness, weight, volume, seasonality and perishability of Agricultural products.
Oral questions & detailed discussion
student book
KLB BK IV
Pg 186-8
12 1
AGRICULTURAL MARKETING & ORGANIZATIONS
Agricultural organizations. Kenya sugar authority, Horticultural crops Development Authority, AFC, ADC, and KMC.
By the end of the lesson, the learner should be able to:
Outline the functions of Kenya sugar authority, Horticultural crops Development Authority, AFC, ADC, and KMC.
Probing questions,
Brief discussion
student book
KLB BK IV
Pg 189-192

Longhorn Bk 4
Pg 163-4
12 2
AGRICULTURAL MARKETING & ORGANIZATIONS
Other Farmers? Associations: KNFU, ASK, 4K-club, YF club.
By the end of the lesson, the learner should be able to:
Outline the functions of other Farmers? Associations such as KNFU, ASK, 4K-club, YF club.
Probing questions,
Brief discussion
Assignment.
student book
KLB BK IV
Pg 195-7
12 3
AGRICULTURAL MARKETING & ORGANIZATIONS
Other Farmers? Associations: KNFU, ASK, 4K-club, YF club.
By the end of the lesson, the learner should be able to:
Outline the functions of other Farmers? Associations such as KNFU, ASK, 4K-club, YF club.
Probing questions,
Brief discussion
Assignment.
student book
KLB BK IV
Pg 195-7
12 4
AGRICULTURAL MARKETING & ORGANIZATIONS
Co-operative societies.
By the end of the lesson, the learner should be able to:
Outline the principles of co-operatives.
Highlight functions of co-operatives.
Probing questions, brief discussion, & teacher?s explanations.
student book
KLB BK IV
Pg 161-2

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