SUBJECT: COMPUTER EDUCATION
CLASS: PRIMARY 3
Topic: Components of the computer system unit 1&11
Subbtitle: Disk Drive
At the end of this this lesson, pupils should be able to:
Resources and materials:
Scheme of work
Pictures/charts of disk drive and the types of disk drive
Building Background/connection to prior knowledge: pupils are familiar with the topic in their previous classes.
Storage devices are parts of the computer system in which we store information. The two kindsof storage devices are the
The main memory storage devices are
RAM stores data, programming languagesband applications software only. This storage is only for some time. It is called a temporary storage.
ROM stores data and system software only.The storage remains in the computer always.It is called a permanent storage.Backing storage devices provide a permanent storage for large amounts of data and programs. These data and programs can be used whenever needed. Backing storage devicesare:
A diskette stores large amounts of data and information. When this information or data is needed, we quickly get it from the diskette.
The hard disk stores the largest amount of data and information. It is also the fastest and easiest way of storing and getting out stored data and information.
Compact disk (CD-ROM)
Compact disks are shining, plastic materials that store large amounts of data and information.
The data and information stored in a CD-ROM are much larger than that stored in a diskette.
are now used for storing music, drawings and video films of very large amounts. Theyare also used for storing games and educational instructions.
DVD means digital versatile disk. A DVD looks like a CD and it can store larger amounts ofinformation.
The magnetic tape is also a backing storage device which stores large amounts of data and information. When needed, we get the data and information stored in a magnetic tape slowly.
The flash disk is very small and highly portable. stores larger quantity of data when comparedto diskettes. It also transfers the data stored in it to the computer at a very high speed.
Step 1 :Teacher revises the previous topic.
Step 2:Teacher introduces the new topic.
Step 3:Teacher explains the new topic.
Step 4: Teacher welcomes pupils questions.
Step 5: Teacher evaluates the pupils.
Assessment & Evaluation:
Tell the meaning of storage device
Identify the general storage device
Identify computer storage device.
WRAP UP(CONCLUSION): Teacher goes over the topic once again for better understanding.
Draw all the backing storage devices on a piece of cardboard and label them.
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