Teacher Guide

Appendix D: Sample lesson plan 1 
32
Cambridge IGCSE and Cambridge O Level Computer Science
Plan lesson content
Planned 
timings
Planned activities
10 minutes
Brief recap of the basic Von Neumann model for a computer system and the 
stored program concept.
Revision of register names and their purposes.
10 minutes
Demonstration of the fetch-execute cycle with a short program.
Using 
http://gcsecomputing.org.uk/lmc/lmc.html 
or similar.
10 minutes
Working in pairs work through a similar short program.
Using 
http://gcsecomputing.org.uk/lmc/lmc.html
or similar.
10 minutes
Working in small groups, arrange cards in the correct order for the fetch 
execute cycle.
10 minutes
Working individually, work through one/both of the programs writing down the 
contents of the registers.
Optional if time 
permits
Role play of fetch-execute cycle for a short program, with some learners taking 
the parts of the registers.
Plan consolidation
Planned 
timings
Planned activities
10 minutes
Quiz, on register names and uses.

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Appendix D: Sample lesson plan 1
33
Cambridge IGCSE and Cambridge O Level Computer Science
Plan assessment
Topic
Teacher Notes
Peer or self-
assessment
Self-assessment after quiz
Homework
Provision of a short program to follow the changes made to specifi c registers 
with, for example CIR and MAR, during the fetch-execute cycle
Exam question
Explain, with examples, what the PC and the MBR are used for in the fetch-
execute cycle
Additional information
Differentiation – how