Teacher Guide

Vocabulary, 
terminology and 
phrases
sequence
selection
repetition
totaling
counting
Previous learning
• understand and use pseudocode
Anticipated learner 
problems
• some learners may have attempted programming before, others 
may be new to the concept
Solutions to the 
problems
• use of Scratch to introduce idea of program
• working in pairs to start with
Resources
• Scratch 
http://scratch.mit.edu/
Some simple tasks in Scratch: 
www.teach-ict.com/
programming/scratch/scratch_home.htm

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Appendix E: Sample lesson plan 2
35
Cambridge IGCSE and Cambridge O Level Computer Science
Plan lesson content
Planned 
timings
Planned activities
10 minutes
Brief recap of the concepts of sequence, selection, repetition, totalling and 
counting.
10 minutes
Demonstration of sequence, selection, repetition, totalling and counting, using a 
pre-prepared Scratch program.
10 minutes
Working in pairs to load and run the program, then change some values. For 
example, the number of repeats.
10 minutes
Working in pairs, develop and test a similar program.
10 minutes
Working individually, identify which instructions perform each action.
Optional if time 
permits
Demonstration of individual programs to the class.
Plan consolidation
Planned 
timings
Planned activities
10 minutes
Individuals developing a new program from a given task

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Appendix E: Sample lesson plan 2 
36
Cambridge IGCSE and Cambridge O Level Computer Science