Lesson Notes By Weeks and Term - Senior Secondary School 1

Term: 3^rd Term

Week: 7

Class: Senior Secondary School 1

Age: 15 years

Duration: 40 minutes of 2 periods each

Date:       

Subject:    Agriculture

Topic:-      Sources of farm power II

SPECIFIC OBJECTIVES: At the end of the lesson, pupils should be able to

1. Define Farm power
2. State and explain the sources of farm power
3. Discuss the advantages and disadvantages of each farm power

INSTRUCTIONAL TECHNIQUES: Identification, explanation, questions and answers, demonstration, videos from source

INSTRUCTIONAL MATERIALS: Videos, loud speaker, textbook, pictures

INSTRUCTIONAL PROCEDURES

PERIOD 1-2

PRESENTATION	TEACHER’S ACTIVITY	STUDENT’S ACTIVITY
STEP 1 INTRODUCTION	The teacher reviews the previous lesson on sources of farm power	Students pay attention
STEP 2 EXPLANATION	She defines farm power. She mentions and explains sources of farm power	Students pay attention and participates
STEP 3 DEMONSTRATION	She discusses the advantages and disadvantages of each source of farm power	Students pay attention and participate
STEP 4 NOTE TAKING	The teacher writes a summarized note on the board	The students copy the note in their books

 

NOTE

SOURCES OF FARM POWER

 

5. SOLAR POWER

This is the power derived from the radiation light and heat reaching the earth from the sun

ADVANTAGES OF SOLAR POWER

1. It is cheap source of power
2. It is free
3. It is easily available
4. It is a neat source of power

DISADVANTAGES OF SOLAR POWER

1. It is only available during the day
2. It cannot be adjusted or stored
3. Its supply cannot be controlled
4. Excess of it can cause transpiration and evaporation
5. It fluctuates in supply

 

6. WIND POWER

Wind power is generated by wind movement. It is used in wind mill generate power by wind turning the wheel and the amount of power produced depends on the force of the wind. It is used to pump water out of borehole to a generating set for the production of electricity. 

ADVANTAGES

1. It is  cheap
2. It is available everywhere
3. It can serve as alternative to electricity

DISADVANTAGES

1. Its supply depends on the force of wind
2. It is limited to certain farm operations
3. It cannot be stored
4. It is difficult to control
5. Efficiency is highly varied

 

7. WATER POWER

This is power generated from water flowing in rivers, dams and streams. It is best harnessed when dams are built. The large head of water resulting from big dams turn mighty turbines which produce power for generating electricity.

ADVANTAGES OF WATER POWER

1. Water can be used for irrigation
2. It can converted to other forms

DISADVANTAGES   OF WATER POWER

1. It is not available in all areas
2. It does not supply power directly
3. It can be destructive if carelessly handled
4. How level of water can affect its efficiency

 

8. BIOGAS POWER

This is power generated through animal waste (esp animals dung). They are carefully collected and processed through scientific means to produce certain gases that provide power.

ADVANTAGES

1. It is a cheap source of power
2. Power derived from biogas can be used as a source of heat for brooding
3. The power can be used for cooking and drying
4. It can be easily controlled
5. It can convert chemical power in dung into heat power

DISADVANTAGE

1. It is not a common source of power
2. It requires expertise which may not readily be available
3. It may be expensive to set up and maintain
4. It is only limited to where animals are reared on commercial basis so that dung will be readily available.

 

 

EVALUATION:   1. Define farm power

2. List and explain the sources of farm power
3. Discuss the advantages and disadvantages of each                              source of farm power

CLASSWORK: As in evaluation

CONCLUSION: The teacher commends the students positively