Lesson Notes By Weeks and Term - Senior Secondary 1
Introduction to data processing
Introduction to data processing
Term: 1st Term
Week: 1
Class: Senior Secondary School 1
Age: 15 years
Duration: 40 minutes of 2 periods each
Date:
Subject: Data Processing
Topic:- Introduction to data processing
SPECIFIC OBJECTIVES: At the end of the lesson, pupils should be able to
INSTRUCTIONAL TECHNIQUES: Identification, explanation, questions and answers, demonstration, videos from source
INSTRUCTIONAL MATERIALS: Videos, loud speaker, pictures, Data Processing for senior Secondary Education by Hiit Plc, WAPB Computer Studies for Senior Secondary I by Adekunle et al, On-line Materials.
INSTRUCTIONAL PROCEDURES
PERIOD 1-2
|
PRESENTATION |
TEACHER’S ACTIVITY |
STUDENT’S ACTIVITY |
|
STEP 1 INTRODUCTION |
The teacher reviews the students’ knowledge about the word “data processing” |
Students pay attention |
|
STEP 2 EXPLANATION |
He explains the meaning of data and information and differentiates them
|
Students pay attention and participates |
|
STEP 3 DEMONSTRATION |
He discusses the definition of data processing and distinguishes between manual and electronic data processing |
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
INTRODUCTION TO DATA PROCESSING
Data means any basic fact which may be input to some processing system.
Information is the end – result of a processing system
Differences between data and information
|
|
Data |
Information |
|
1 |
Data are raw facts that have no specific meaning |
Information are processed facts with a purpose and a specific meaning |
|
2 |
Data is a Latin word means something that is given |
Information is a Latin word that means formation or conception |
|
3 |
Data is independent of the information |
Information is dependent on data |
|
4 |
Data especially raw ones are not enough to make decisions |
The information is sufficient to help make a decision in the respective context |
DATA PROCESSING
Data processing is the task of using a collection of basic facts to produce
Information. Usually data it has no value in itself until it is subjected to
nalysis, validations and comparisons with other data produce result
(information). For example a collection of weights of individuals is not a
useful information for decision making. However when the set of data is
processed such as searching for individual with a maximum or minimum
weight or the weight of all concerned in the study, information is produced.
Management can decide on the basis of each information to assign special
duties to the fellow with the maximum or minimum weight. Other use could
be made on such information depending upon the situation prevailing on
the organization and their special needs.
Therefore, data processing is an operation on computer data which
involves the entering, sorting, updating and retrieving of information using
computer.
PROPERTIES OF DATA
DATA PROCESSING CYCLE
The data processing cycle describes the stages of data processing. It
involves the following stages:
Stages of data processing
INPUT à PROCESSING àOUTPUT
Differences between manual and electronic data processing
|
|
Manual data processing |
Electronic data processing |
|
1 |
It relies on people to process data |
It relies on an electronic device e.g computer to process data |
|
2 |
It requires more effort and cost |
It doesn’t require a lot of effort and cost |
EVALUATION: 1. Explain the meaning of
CLASSWORK: As in evaluation
CONCLUSION: The teacher commends the students positively