Class: Primary 4

Term: 1st Term

Week: 10

Age: 9 years


Duration: 40 minutes


Subject: Basic Science And Technology

Curriculum Theme: Computer Studies

Topic: Computer Memory

Content: RAM, ROM

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

  • Differentiate between RAM and ROM.

Reference Materials:

  • 9 – Years Basic Education Curriculum
  • Abuja Educational Resource Centre Scheme of work
  • NAPPS National Unified Scheme of Work
  • Course Book
  • Online Information
  • Textbooks (List your relevant textbook here)

Instructional Materials:

  • Whiteboard and markers
  • Pictures or diagrams of RAM and ROM
  • Real-life examples of RAM and ROM
  • Charts or posters

Rationale for the Lesson:

Understanding computer memory, specifically RAM and ROM, is essential as it plays a crucial role in how computers work. It is relevant in daily life as we encounter these terms when using electronic devices.

Prerequisite/Previous Knowledge:

Students should have basic knowledge of what a computer is and how it functions.


Content Development: Computer Memory

ContentTimeTeaching MethodTeacher’s Point/ActivitiesPupils’ Activities
Introduction 10 minsIntroduce the topic to the pupils Ask students what they know about computer memory. Explain the topic and its importance.Respond to questions and listen attentively.
RAM and ROM 10 minsExplanationDefine RAM (Random Access Memory) and ROM (Read-Only Memory). Compare and contrast the two.Take notes and ask questions if something is unclear.
Differences10 minsDiscussion and ExamplesDiscuss the differences between RAM and ROM, using real-life examples and diagrams.Participate in the discussion and ask questions.
Evaluation 5 minsQuestion and AnswerAsk questions about the differences between RAM and ROM.Answer questions individually.
Conclusion 5 minsRecap and DiscussionSummarize the lesson and emphasize the importance of understanding computer memory.Share what they’ve learned.

Note to Pupils:

Differences Between RAM AND ROM

RAM (Random Access Memory):

  • RAM is like the computer’s short-term memory.
  • It’s where the computer stores information while it’s working on tasks.
  • RAM is temporary; it forgets everything when the computer is turned off.
  • You can add or remove RAM to make the computer work faster.

ROM (Read-Only Memory):

  • ROM is like the computer’s long-term memory.
  • It stores essential information that the computer needs to start.
  • ROM is permanent; it doesn’t forget even when the computer is turned off.
  • You can’t add or remove anything from ROM; it’s read-only.


  1. What does RAM stand for, and what is its function?
  2. What does ROM stand for, and what is its function?
  3. How are RAM and ROM different from each other?

Note to Teachers:

Customize the lesson content, teaching methods, and pupil activities to suit your teaching style, curriculum, and available resources.

Categorized in:

Lesson Notes,

Last Update: October 24, 2023