Lesson Notes By Weeks and Term - Primary 2

Term: 3^rd Term

Week: 2

Class: Primary 2

Age: 7 years

Duration: 40 minutes of 3 periods

Date:

Subject: Basic Science and Technology

Topic:-        Forms of energy

          -        Classification of computers by size

          -        Hygiene

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

1. Give the simple meaning Energy
2. List the simple things energy can be used for
3. Describe the types of energy
4. State the sources of energy
5. Explain the first, second and third generation of computers
6. Describe methods through which water can be purified at home

INSTRUCTIONAL TECHNIQUES: Identification, explanation, playway method, questions and answers, demonstration

INSTRUCTIONAL MATERIALS: Charts on uses of energy, funnels, boiler, water etc

INSTRUCTIONAL PROCEDURES

PERIOD 1: Energy

NOTE

Energy

Energy is simply the ability to do work

Things energy can be used for

1. to walk and ride bicycles
2. to cook food
3. to light our homes, schools and offices
4. to burn items
5. to power our generator
6. to dry our clothes
7. to produce electricity
8. To process our food

Types of energy

1. heat energy
2. light energy
3. chemical energy
4. electrical energy
5. solar energy
6. mechanical energy
7. potential energy
8. kinetic energy

Sources of energy

1. Solar energy from the sun
2. Geothermal energy from the earth
3. wind energy
4. biomass from plants
5. hydropower from flowing water

EVALUATION:    1. Explain the meaning of Energy

2. Outline three things energy can be used for
3. Name four types of energy
4. Describe three sources of energy

CLASSWORK: As in evaluation

CONCLUSION: The teacher commends the pupils positively

PERIOD 2 and 3: Classification of computer by generation. Hygiene  

NOTE

FIRST GENERATION (1946-1959)

First-generation computers were based on vacuum tubes. These machines were large in size, expensive to operate and instructions were written in machine language. Their computation time was in milliseconds.

SECOND GENERATION (1959-1965)

Second-generation computers were based on transistors. They were smaller in size, less expensive and required less maintenance than the first-generation computers. They used the stored program concept. Programs were written in assembly language. The computation time was in microseconds.

THIRD GENERATION (1964-1971)

Third-generation computers were characterized by the use of Integrated

Circuits. They consumed less power and required low maintenance

compared to their predecessors. High-level languages were used for

programming. The computation time was in nanoseconds. These

computers marked the beginning of commercial production.

Methods of purifying water

1. filtration: This is when we remove particles from water using funnels or thin sieves
2. Use of chemicals: this is when we add chemicals like alum to water
3. Boiling: This is when water is cooked in order to make it safe
4. Distillation: this is purifying water by boiling water, cooling it and storing it for later use

EVALUATION:    1. Describe the first generation of computers

2. Describe the second generation of computers
3. Describe the third generation of computers
4. Describe three methods of purifying water

CLASS ACTIVITY: Draw the process of purifying water on a cardboard

CLASSWORK: As in evaluation

CONCLUSION: The teacher commends the pupils positively