Learning About Computer Generations: First and Third Generations Computer Studies ICT Primary 2 Third Term Lesson Notes Week 2 & 3

Classification of computers by generations Explain first and third generations of computers X First generation ✗ Third generation

Subject: Computer Studies

Class: Primary 2

Term: Third Term

Week: 2 & 3

Topic: Classification of Computers by Generations

Sub-Topic: First and Third Generations of Computers

Duration: 40 minutes

Behavioural Objectives: By the end of the lesson, pupils should be able to:

  • Describe first-generation computers.
  • Describe third-generation computers.
  • Compare the two generations of computers.

Key Words: Computer, generation, first, third, vacuum tubes, integrated circuits

Entry Behaviour: Pupils have some knowledge of computers from earlier lessons.

Learning Resources and Materials:

  • Pictures of first and third-generation computers.
  • Charts and diagrams showing the differences between the generations.
  • Reference books: Lagos State Scheme of Work and computer studies resources.

Building Background / Connection to Prior Knowledge:

  • Review the general concept of computers and their uses.
  • Ask pupils if they know about old and new computers.

Embedded Core Skills:

  • Listening
  • Speaking
  • Critical thinking
  • Comparison skills

Learning Materials:

  • Chart paper
  • Whiteboard markers
  • Student notebooks

Instructional Materials:

  • Pictures of different computer generations.
  • Charts showing the features of first and third-generation computers.

Content:

  • Explain the features of first-generation computers.
  • Describe third-generation computers and their parts.
  • Compare the differences between first and third-generation computers.

First Generation of Computers:

  • Time Period: 1940s to 1950s.
  • Size: They were very big, sometimes as large as a room! 🏢
  • Parts: These computers used vacuum tubes. Vacuum tubes were glass tubes with wires inside them.
  • Speed: They were very slow and took a long time to do simple tasks.
  • Example: ENIAC was one of the first computers and it was huge!

Third Generation of Computers:

  • Time Period: 1960s to 1970s.
  • Size: These computers were smaller than the first generation.
  • Parts: They used integrated circuits (ICs). These are small chips that contain many tiny circuits.
  • Speed: They were much faster than first-generation computers.
  • Example: IBM 360 was a popular computer from this time.

Class Activity Discussion :

First Generation of Computers

  1. When were first-generation computers made?
    • They were made in the 1940s and 1950s.
  2. How big were first-generation computers?
    • They were very big, as large as a room.
  3. What did first-generation computers use?
    • They used vacuum tubes.
  4. Were first-generation computers fast or slow?
    • They were slow.
  5. What is an example of a first-generation computer?
    • ENIAC is an example of a first-generation computer.

Third Generation of Computers

  1. When were third-generation computers made?
    • They were made in the 1960s and 1970s.
  2. How big were third-generation computers?
    • They were smaller than first-generation computers.
  3. What did third-generation computers use?
    • They used integrated circuits (ICs).
  4. Were third-generation computers fast or slow?
    • They were faster than first-generation computers.
  5. What is an example of a third-generation computer?
    • IBM 360 is an example of a third-generation computer.

General Questions

  1. What are vacuum tubes?
    • Vacuum tubes are glass tubes with wires inside that were used in old computers.
  2. What are integrated circuits (ICs)?
    • ICs are small chips with many tiny circuits inside.
  3. Why did third-generation computers use ICs?
    • ICs helped the computers be smaller and faster.
  4. Which generation of computers used more energy?
    • First-generation computers used more energy.
  5. How have computers changed from the first to the third generation?
    • Computers became smaller, faster, and used different parts from first to third generation.

Evaluation :

The first and third generations of computers:

  1. First-generation computers were made in the _______.
    • a) 2000s
    • b) 1940s and 1950s
    • c) 1980s
    • d) 1960s
  2. First-generation computers were as large as a _______.
    • a) room
    • b) desk
    • c) bed
    • d) book
  3. First-generation computers used _______ tubes.
    • a) light
    • b) vacuum
    • c) rubber
    • d) glass
  4. First-generation computers were very _______.
    • a) fast
    • b) quiet
    • c) slow
    • d) colorful
  5. ENIAC was a famous first-generation _______.
    • a) car
    • b) train
    • c) plane
    • d) computer
  6. Third-generation computers were made in the _______.
    • a) 1930s
    • b) 1960s and 1970s
    • c) 1990s
    • d) 1980s
  7. Third-generation computers were _______ than first-generation computers.
    • a) bigger
    • b) heavier
    • c) smaller
    • d) slower
  8. Third-generation computers used _______ circuits.
    • a) empty
    • b) electric
    • c) integrated
    • d) disconnected
  9. Third-generation computers were much _______ than first-generation computers.
    • a) slower
    • b) noisier
    • c) faster
    • d) heavier
  10. IBM 360 was a famous third-generation _______.
    • a) phone
    • b) train
    • c) computer
    • d) bike
  11. Vacuum tubes were used in _______ generation computers.
    • a) second
    • b) third
    • c) first
    • d) fourth
  12. Integrated circuits helped third-generation computers be _______ and faster.
    • a) older
    • b) bigger
    • c) noisier
    • d) smaller
  13. First-generation computers used a lot of _______.
    • a) light
    • b) energy
    • c) paper
    • d) space
  14. Third-generation computers had smaller _______ parts.
    • a) electronic
    • b) glass
    • c) paper
    • d) plastic
  15. Which generation of computers came first?
    • a) Third
    • b) First
    • c) Second
    • d) Fourth

Presentation:

Step 1: Teacher revises the previous topic, which was “Revision” from Week 1.

  • Ask pupils to recall the topics they learned last week.
  • Discuss the uses of different types of IT devices.

Step 2: Teacher introduces the new topic “Classification of Computers by Generations: First and Third.”

  • Show pictures of first-generation and third-generation computers.
  • Explain the main features of first-generation computers, such as vacuum tubes.
  • Discuss third-generation computers and their use of integrated circuits.

Step 3: Teacher allows pupils to give their own contributions and corrects them when and where necessary.

  • Ask pupils questions about the differences between first and third-generation computers.
  • Encourage pupils to share what they know about old and new computers.

Teacher’s Activities:

  • Present the information on first and third-generation computers.
  • Ask questions to assess pupils’ understanding.
  • Offer clarifications and additional explanations as needed.

Learners’ Activities:

  • Listen to the teacher’s explanations.
  • Participate in discussions and ask questions.
  • Take notes on the differences between first and third-generation computers.

Assessment:

  • Observe pupils’ participation and understanding during the lesson.
  • Listen to pupils’ answers to questions and provide feedback.

Ten Evaluation Questions:

  1. What is a first-generation computer?
  2. What part did first-generation computers use?
  3. Were first-generation computers big or small?
  4. What are third-generation computers?
  5. What part do third-generation computers use?
  6. Were third-generation computers faster or slower than first-generation computers?
  7. What is one difference between first and third-generation computers?
  8. Give an example of a first-generation computer.
  9. Give an example of a third-generation computer.
  10. How have computers changed from the first generation to the third generation?

Conclusion:

  • The teacher goes around the class to check pupils’ answers and provides corrections.
  • Summarize the key points from the lesson.
  • Remind pupils of the importance of understanding how computers have changed over time.