# System Unit III – Parts of CPU (Primary 3)

COMPUTER STUDIES

INFORMATION TECHNOLOGY

BASIC SCIENCE AND TECHNOLOGY

THIRD TERM

WEEK 4

PRIMARY 3

THEME – BASIC COMPUTER OPERATIONS

PREVIOUS LESSON – System Unit II – Internal Features of System Unit (Primary 3)

TOPIC – CPU

LEARNING AREA

1. What CPU stands for?

2. Parts of CPU

PERFORMANCE OBJECTIVES

By the end of the lesson, the pupils should have attained the following objectives (cognitive, affective and psychomotor) and should be able to –

list parts of the CPU.

ENTRY BEHAVIOUR

System Unit

INSTRUCTIONAL MATERIALS

The teacher will teach the lesson with the aid of:

1. Computer system

2. Picture or chart of a system unit

METHOD OF TEACHING – Choose a suitable and appropriate methods for the lessons.

Note – Irrespective of choosing methods of teaching, always introduce an activities that will arouse pupil’s interest or lead them to the lessons.

REFERENCE MATERIALS

1. Scheme of Work

2. 9 – Years Basic Education Curriculum

3. Course Book

4. All Relevant Material

5. Online Information

CONTENT OF THE LESSON

INTRODUCTION – IDENTIFICATION OF CUP

C – P – U

CENTRAL PROCESSOR UNIT

CPU – Stands for Central Processor Unit.

It is also called processor.

CPU is  the brain of a computer.

The CPU makes the computer to think, calculate, count and draw.

PARTS OR COMPONENTS OF THE CPU

1. Arithmetic and logic unit (ALU)

2. Random Access Memory (RAM)

3. Control Unit (CU)

PRESENTATION

To deliver the lesson, the teacher adopts the following steps:

1. To introduce the lesson, the teacher revises the previous lesson. Based on this, he/she asks the pupils some questions;

2. Guides pupils to identify the parts of a CPU and describe the CPU.

Pupil’s Activities – Identify the parts of a CPU and describe the CPU.

Teacher’s/Pupil’s Activities – Draw and label the CPU.

CONCLUSION

• To conclude the lesson for the week, the teacher revises the entire lesson and links it to the following week’s lesson.

LESSON EVALUATION

Pupils to:

1. describe the CPU.

name three components of a CPU.

2. ______________________________

3. ______________________________

4. ______________________________

5. _____________ is the brain of a computer.

A. CPU

B. CUP

C. PUC

6. The CPU makes the computer to think, calculate, ___________ and _______________.

A. Count and draw

B. Count and drop

C. Count and divide