# HISTORICAL DEVELOPMENT OF COMPUTERS: EARLY COUNTING DEVICES

**Subject :Â **

Computer Studies (ICT)

**Term :**

First Term / 1st Term

**Week:**

Week 1

**Class :**

JSS 1 / Basic 7

**Previous lesson :Â **

The pupils have previous knowledge of

**TYPES OF CRAFT**

in their previous classes

**Topic :**

**HISTORICAL DEVELOPMENT OF COMPUTERS: EARLY COUNTING DEVICES**

**Behavioural objectives:**

At the end of the lesson, the pupils should be able to

- define computers
- state earlier counting devices
- Mention the various stages of computer development

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**Instructional Materials:**

- Wall charts
- Pictures of different types of houses
- Related Online Video
- Flash Cards

**Methods of Teaching:**

- ClassÂ Discussion
- Group Discussion
- Asking Questions
- Explanation
- Role Modelling
- Role Delegation

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**Reference Materials:**

- Scheme of Work
- Online Information
- Textbooks
- Workbooks
- 9 Year Basic Education Curriculum
- Workbooks

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**Content:**

**Definition and Examples of Early Counting Devices**

Early counting devicesÂ areÂ devicesÂ that were used in theÂ earlyÂ days to perform arithmetic operations such as addition of numbers, subtraction and multiplication. TheseÂ devicesÂ were used for the usual barter trade of theÂ earlyÂ days.

Examples ofÂ early counting devices are fingers, toes, stones, sticks, pebbles, cowries among others.

The history and development of computer can be traced back to the studies of Mathematics which started with counting. The history of Mathematics is the history of civilization.

These has led to various computing inventions in search for a tool that could enable man meet his computational and data processing needs until we have the computer today.

It was in the process of finding solutions to the problem of counting that early counting devices emerged. Examples of fingers and toes method of calculation are seen below;

As time went on, fingers and toes method became ineffective, especially for large numbers, hence, the emergence of counting and solving basic arithmetic problems with the use of stones and sticks.

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**Limitations to the Early Counting DevicesÂ **

The problems posed by these early counting and data processing method were enormous. The following are limitations to the early counting devices:

- They could not be used for counting large numbers efficiently.
- It is stressful
- It required man power
- It is time consuming
- It requires more of that device to perform a large number of counting

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**Presentation**

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The topic is presented step by step

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Step 1:

The class teacher revises the previous topics

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Step 2.

He introduces the new topic

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Step 3:

The class teacher allows the pupils to give their own examples and he corrects them when the needs arise

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**Conclusion**

The class teacher wraps up or concludes the lesson by giving out a short note to summarize the topic that he or she has just taught.

The class teacher also goes round to make sure that the notes are well copied or well written by the pupils.

He or she does the necessary corrections when and where the needs arise.

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**EVALUATION**

- Define early counting devices
- Mention four early counting devices.
- Give examples of 4 early Counting Devices
- Mention 4 Limitations to the Early Counting Devices

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