REFRIGERATION AND AIR CONDITIONING

Effect of temperature , pressure and volume in refrigeration and air conditioning

State Boyles, Charles and gas law of partial pressure

Calculations involving general gas law formulae p1v1 = p2v2

T1 T2

PV = MRT

Plotting various temperature scale

Types and application of various forms refrigeration and its principles of operations.

Function of the components and accessories e.g. relays, solenoid valves, capacitors, thermostats etc of absorption system of refrigeration.

Types, purpose, functions and principles of operation of liquid receiver and service value.

Servicing and repairs procedures for liquid, receivers and services value.

Types, function, operation, application and installation procedures of motors and generators.

Maintenance of motors and generators in refrigeration system

Working principles and installation of a cold store / room.

Space cooling load and factors affecting cold room operations

Testing for leakages, polarity, insulation

Testing for continuity, pressure, efficiency

Maintenance of compressor, motors, condensers, values, accumulators, contactors etc

ii. Aims/importance of animal improvement

ii. Students participate actively in the discussion

- Introduction, advantages and disadvantages

- Selection, advantages and disadvantages

ii. Students participate actively in the discussion

- Breeding, advantages and disadvantages

- Hybridization, advantages and disadvantages

ii. Students participate actively in the discussion

ii. Methods of artificial insemination

• 
  Artificial vagina
  
• 
  Massage method
  
• 
  Electro-ejaculation
  
• 
  Recovery of semen from vagina after service
  

ii. Teacher demonstrates semen collection

ii. The teacher displays artificial insemination equipment/tools.

ii. Disadvantages of artificial insemination

ii. Students participate actively

iii. Teacher displays pictures/charts.

ii. State the disease causing organisms

iii. Discuss factors that predispose farm animals to diseases

iv. Basic symptoms of farm animal diseases.

ii. Students participate actively

iii. Teacher displays pictures/charts.

i. bacteria

ii. virus

iii. fungi

iv. protozoa

ii. Students participate actively

ii. Classes of livestock parasites e.g. ectoparasite, endopararsite

iii. Effects of parasites on farm animals

ii. Displays pictures of farm animals affected by parasite

ii. Observation of and collection of ecto parasites of farm animals

iii. Observation of and collection of endo parasites of farm animals

ii. Students to make collection of animal parasites in the laboratory

ii. Students to observe the school poultry birds for symptoms of disease and write report on them.

• 
  Quarantine
  
• 
  Vaccination
  
• 
  Inoculation
  
• 
  Hygiene
  
• 
  Good feeding
  
• 
  Rotational grazing etc.
  

II). The students participate actively in the class

• 
  Isolation
  
• 
  Hygiene
  
• 
  Use of chemicals
  
• 
  Rotational grazing
  

II). The students participate actively in the class

ii). Visit to a veterinary clinic to observe the animal health workers

2

4.

5.

7

8

10.

12.

14

1. 
   Meaning of control ledger
   
2. 
   Classification of control
   
3. 
   Uses of control ledger
   

1. 
   Advantages and disadvantages of control ledger
   
2. 
   Preparation of sales ledger control.
   

1. 
   Preparation of purchases ledger control
   

1. 
   Preparation of sales ledger control when two balances are given.
   
2. 
   Preparation of purchases ledger control when two balances are given.
   

1. 
   Meaning of business organisation.
   
2. 
   Explain the types of business organisations.
   

1. 
   Enumerate the advantages and disadvantages of business organization.
   
2. 
   Outline the features of each types of business organisation
   
3. 
   Take excursion to business organisation.
   

1. 
   Meaning of capital
   
2. 
   Identify various sources of capital e.g personal savings, loans from bank, friends and relatives, plough back profit, issue of shares and debentures.
   

1. 
   Outlines the features of sources of capital.
   
2. 
   Explains types of capital
   

1. 
   Explain the meaning of concepts.
   
2. 
   Explains the meaning of entity.
   

1. 
   Features of entity concepts e.g legal personality, ownership divorce from the management etc.
   

Relevance of entity concepts.

1. 
   Meaning of products
   
2. 
   Meaning of service
   
3. 
   Meaning of product and services
   
4. 
   Differences between product and services.
   

Revision

1. 
   Define control ledger
   
2. 
   State the classification of control ledger
   
3. 
   Outline the uses of control ledger.
   

1. 
   Identify the items in the general ledger
   
2. 
   Make notes on the general ledger
   

1. 
   Outline the advantages of control account.
   
2. 
   Outline the disadvantage of control account.
   
3. 
   Solve exercises on control i.e sales ledger control account.
   

-guide students in solving exercises on sales ledger control.

Instructional Resources: A chart showing the format of sales ledger control.

Teacher Activities- solve exercises on purchases control ledger.

Student Activities- Guide students in solving relevant exercises.

Instructional Resources: A chart showing the format of purchases ledger control

Teacher Activities-

Guide students in solving relevant exercises.

1. 
   Define business organisation
   
2. 
   List and explain the type of business organisation eg sole, partnership, cooperatives societies etc.
   

1. 
   Understand the meaning of business organisations.
   
2. 
   State the types of business organisations.
   

Chart, pictures, magazine of business organisation.

1. 
   List the advantages and disadvantages of business organisations.
   
2. 
   State the features of business organisation.
   

Understand the features and the advantages and disadvantages of business organisation.

1. 
   Defines capital
   
2. 
   Discusses the sources of capital
   
3. 
   Identifies the various sources of capital.
   

1. 
   Take notes on capital and its sources
   
2. 
   Mention various sources of capital and explain them.
   

1. 
   Mention the features of capital
   
2. 
   List and explains types of capital
   

Take notes on the features of source and types of capital.

1. 
   Defines entity
   
2. 
   Defines concepts.
   
3. 
   Defies entity concepts.
   

Photographs, videos, pictures.

1. 
   Define product.
   
2. 
   Define services
   
3. 
   Guides students in differentiating products from services.
   

1. 
   Copy notes on products and services.
   
2. 
   Understand the difference between product and services.
   

Magazines, videos, posters. Samples of real objects.

Revision

Examination

2.

3.

4.

5.

Meaning of marking.

• 
  Outline the various types of products and services.
  

• 
  Meaning of promoting products and services e.g advertising, after sale service, guarantee period sales discount.
  

Revision

Define marking

Explain the meaning of marking.

Instructional Resources: magazines, pictorial poster , handbills.
Teachers Activities:

Enumerate the various types of product and services

Understand the types of product and services and copy notes.

Instructional Resources: magazines, pictorial posters, and handbills.

Teacher Activities:

States the means of promoting products and services

Students Activities: Learner understands the various methods of promoting products and services.
Revision

Examination