FARM POWER & MACHINERY.

Electrical system of a tractor.
Tractor ignition system.

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.
Chart - ignition system.

KLB BK IV
Pg 65-67

Longhorn Bk IV
Pg 61

FARM POWER & MACHINERY.

Tractor cooling system.
Lubrication system of an engine.
Power transmission system of an engine.
Tractor servicing.

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.
diagram of a lubrication system
Chart- power transmission
system.

KLB BK IV
Pg 69-71

Longhorn Bk IV
Pg 63-64

FARM POWER & MACHINERY.

Tractor drawn implements.
Disc plough.
Mould board plough.
Harrows.

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.
Chart- Disc plough
Chart- Mould board plough
harrows 

KLB BK IV
Pg 77-80

Longhorn Bk IV
Pg 66-7

FARM POWER & MACHINERY.
AGRIC. ECONOMICS III (PRODUCTION ECONOMICS)
AGRIC. ECONOMICS III (PRODUCTION ECONOMICS)

Other farm implements.
Animal drawn implements.
Household firm relationship.
Gross domestic product (GDP) and Gross National product (GNP). Per Capita Income.

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
Chart:
An ox-plough.
resource person
calculator

KLB BK IV
Pg 85-91

Longhorn Bk IV
Pg 78-82

AGRIC. ECONOMICS III (PRODUCTION ECONOMICS)

Contribution of Agriculture to national development.
Land as a factor of production.
Labor as a factor of production.
Capital.

By the end of the lesson, the learner should be able to:
Explain contribution of Agriculture to development.

Brain storming;
Discussion.

student book
chart

KLB BK IV
Pg 98-9
Longhorn Bk 4
Pg 90-91

AGRIC. ECONOMICS III (PRODUCTION ECONOMICS)

Management as a production factor.
Production function.
Production function curves.
Increasing returns production functions.

By the end of the lesson, the learner should be able to:
State functions of a manager in a farm.
Identify good qualities of a manager.

Q/A & discussion.

Graph papers.

KLB BK IV
Pg 103-4

AGRIC. ECONOMICS III (PRODUCTION ECONOMICS)

Constant returns production functions.
Decreasing returns production functions.
Law of diminishing returns.
Zones of a PF curve.

By the end of the lesson, the learner should be able to:
Constant returns production functions.
Give empirical examples where Increasing returns production functions are experienced.

Tabulate inputs and outputs.
Graphical representation of constant returns production functions.

charts
graphs
Chart - Curve showing 3 zones of PF.

KLB BK IV
Pg 108-9

Longhorn Bk 4
Pg 99

AGRIC. ECONOMICS III (PRODUCTION ECONOMICS)

The principles of substitution. Input-input relationship.
Product-product relationship. Supplementary and complementary products.
The principle of equi-marginal returns. The concept of cost.
Types of revenue.

By the end of the lesson, the learner should be able to:
State the principles of substitution.
Give examples illustrating principles of substitution.
Identify ways of combining inputs.

Exposition.

Illustrative examples, brief discussion.

charts

KLB BK IV
Pg 115-6

Longhorn Bk 4
Pg 102

AGRIC. ECONOMICS III (PRODUCTION ECONOMICS)

Farm planning.
Making a farm plan.
Farm budgeting.
Types of farm budgets.
Farmer?s support services Extension, training & banking.

By the end of the lesson, the learner should be able to:
State factors to consider when drawing a farm plan.

Exposition, Q/A & discussion.

charts
chart

KLB BK IV
Pg 121-2
Longhorn Bk 4
Pg 108

AGRIC. ECONOMICS III (PRODUCTION ECONOMICS)

Credit. Sources of credit.
Artificial insemination & Agricultural research.
Marketing. Farm input suppliers Tractor hire service
Risks and uncertainties in farming.

By the end of the lesson, the learner should be able to:
Define the term credit.
Identify types of credit.
Differentiate between hard & soft credit.
List down sources of credit.
Identify problems associated with credits.

Detailed discussion
& exposition of new concepts.

student book
resource person

KLB BK IV
Pg 128-130



Longhorn Bk 4
Pg 113-5

AGRIC. ECONOMICS III (PRODUCTION ECONOMICS)
AGRICULTURE ECONOMIC IV (FARM ACCOUNTS)
AGRICULTURE ECONOMIC IV (FARM ACCOUNTS)
AGRICULTURE ECONOMIC IV (FARM ACCOUNTS)

Adjusting to uncertainties and risks.
Financial documents.
Books of accounts.
Cash book.

By the end of the lesson, the learner should be able to:
Outline ways of adjusting to risks and uncertainties.

Brain storming;
Detailed discussion.

Invoice, receipt, delivery note and a purchase order.
Cash book.

KLB BK IV
Pg 135-6

Longhorn Bk 4
Pg 118-9

AGRICULTURE ECONOMIC IV (FARM ACCOUNTS)

Journal & Subsidiary books of the Journal.
Financial statements. Balance sheet.
Solvency of a business.

By the end of the lesson, the learner should be able to:
Describe features of the journal & subsidiary books of the journal.

Oral questions & brief discussion.
Illustrative tables.

Balance sheet.

KLB BK IV
Pg 151-3

AGRICULTURE ECONOMIC IV (FARM ACCOUNTS)
AGRICULTURAL MARKETING & ORGANIZATIONS
AGRICULTURAL MARKETING & ORGANIZATIONS
AGRICULTURAL MARKETING & ORGANIZATIONS

Profit and loss account.
Market and marketing.
Types of markets. Monopoly. Oligopoly & Monopsony.
Price theory and demand.

By the end of the lesson, the learner should be able to:
Define a profit and loss account.
Draw a profit and loss A/C.
Compute net profit.

Teacher gives format of profit and loss A/C.
Worked examples.
Supervised practice.

chart 
student book

KLB BK IV
Pg 157-9
Longhorn Bk 4
Pg 132-3

AGRICULTURAL MARKETING & ORGANIZATIONS

Factors affecting demand for a commodity.
Elasticity of demand.
Factors affecting elasticity of demand.
Supply & Supply-price relationship.

By the end of the lesson, the learner should be able to:
Outline factors affecting demand for a commodity.

Q/A, discussion & explanations.

chart

KLB BK IV
Pg 168-9
Longhorn Bk 4
Pg 140-2

AGRICULTURAL MARKETING & ORGANIZATIONS

Factors affecting supply of a commodity.
Elasticity of supply (Es).
Determination of market prices.
Price control. Marketing and marketing function.

By the end of the lesson, the learner should be able to:
State & explain factors affecting supply of a commodity.

Q/A & detailed discussion.

chart
graph
student book

KLB BK IV
Pg 175-7
Longhorn Bk 4
Pg 145-6

AGRICULTURAL MARKETING & ORGANIZATIONS

Marketing organizations and agencies. Wholesalers & retailers.
Itinerant traders, broker agents & commission agents.
Packers and processors, marketing boards & auctioneers.
Special characteristics of Agricultural products.

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.

student book

KLB BK IV
Pg 183-4

Longhorn Bk 4
Pg 151

AGRICULTURAL MARKETING & ORGANIZATIONS

Agricultural organizations. Kenya sugar authority, Horticultural crops Development Authority, AFC, ADC, and KMC.
Other Farmers? Associations: KNFU, ASK, 4K-club, YF club.
Co-operative societies.

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