# History of Computer – Early Counting Devices (Primary 3)

Last Updated on September 10, 2020 by Alabi M. S.

COMPUTER STUDIES

(INFORMATION TECHNOLOGY)

BASIC SCIENCE AND TECHNOLOGY

FIRST TERM

WEEK 2

PRIMARY 3

THEME – BASIC COMPUTER OPERATIONS

PREVIOUS LESSON –

TOPIC – HISTORY OF COMPUTER – EARLY COUNTING DEVICES

LEARNING AREA

1. Introductory Activities

2. History of Computer – Early Counting Devices

3. Using Early Counting Devices for Basic Arithmetic such as Addition, Subtraction, Multiplication and Division

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 –

identify early counting devices.

ENTRY BEHAVIOUR

INSTRUCTIONAL MATERIALS

The teacher will teach the lesson with the aid of:

1. Sticks

2. Stones

3. Seeds, etc.

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

INTRODUCTORY ACTIVITIES

Teacher’s/Pupil’s Activities – Displays some common counting devices such as stones, pebbles, seeds, bottle tops, cowrie, etc. for the pupils to identify and state their uses.

Listen to the pupils and introduce materials as early counting devices. Then, discuss the history of computer.

HISTORY OF COMPUTER

Before the invention of computer, people used their fingers and toes in counting.

Sometimes, they used stones, pebbles, cowries even the seed of plants like agbalumo seeds and palm kernel are used in counting.

MEANING OF EARLY COUNTING DEVICES

Early Counting Devices are devices used for performing basic arithmetic operations such as addition and subtraction before the invention of computer.

Examples of Early Counting Devices

1. Fingers and toes

2. stones

3. wooden sticks

4. pebbles

5. cowries

6. notch sticks

7. Bottle tops (local name – counter)

8. Seeds of plants such as agbalumo seeds (local name – koro or station) and palm kernel.

9. Straw – each straw are cut into smaller pieces for counting.

10. Beads such as rosary which are still commonly used by Catholic and Muslim for Prayer.

Note – The early counting devices are still the basic for teaching and learning arithmetic at early classes.

PRACTICAL DEMONSTRATION USING EARLY COUNTING DEVICES FOR BASIC ARITHMETIC SUCH ADDITION AND SUBTRACTION

Teacher’s/Pupil’s Activities –

1. 5 + 4, using fingers only.

2. 13 + 8, using fingers and toes.

3. 13 + 8, using fingers only.

4. 15 – 7, any of the stated devices.

5. 5 x 5, any of the stated devices.

6. 20 ÷ 5, any of the stated devices.

4. 25 + 13, using station or counter.

5. Count 100 in 10s and 5s using fingers only.

6. Counting 1000 in 100s and 50s using any early counting devices.

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. Engages the pupils to count with fingers, stones, sticks, etc.

Pupil’s Activities – Count up to 25 using their five fingers, sticks and stones.

3. Teacher’s/Pupil’s Activities – Practical Demonstration of counting using different kinds of early counting devices.

CONCLUSION

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

LESSON EVALUATION

Pupils to attempt all the questions.

WORKBOOK – WEEKLY ASSESSMENT

1. __________________ is an early counting device.

A. Calculator

B. Computer

C. Palm kernel

2. __________________ are used for counting before the invention of computer.

A. Modern Counting Devices

B. Early Counting Devices

C. Abacus Counting Devices

3. __________________ are still basic for teaching and learning arithmetic at basic classes.

A. Modern Counting Devices

B. Early Counting Devices

C. Abacus Counting Devices

4. Early Counting Devices can be used for __________________ and __________________.

B. Subtraction and division

C. All of the above

5. __________________ are used by Catholic and Muslim in prayers.

A. Rosary

B. Finger

C. All of the above

6. The following can be used for arithmetic operations except __________________.

A. Counter

B. Calculator

C. None of the above

Mention at least 5 early counting devices.

6. __________________

7. __________________

8. __________________

9. __________________

10. __________________

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