Lesson 2: Identifying what code does

Whilst rediscovering the features of the Scratch interface and tools, pupils utilise their decomposition skills to decipher what has been included in the script for a quiz

Before the lesson

Download classroom resources

Learning objective

  • To understand how a Scratch game works by using decomposition to identify key features

National curriculum

Pupils should be taught to:

  • Design, write and debug programs that accomplish specific goals, including controlling or simulating physical systems; solve problems by decomposing them into smaller parts

Success criteria

Cross-curricular links

Attention grabber

Main event


Pupils needing extra support: encourage them to think about what happens when they get a question correct compared to when they get a question incorrect.


Pupils working at greater depth: expect a greater understanding of how the sprites are interacting with one another. Ask them to open up a blank Scratch project and try out different blocks to see if they can get a similar response.

Wrapping up

Assessing pupils' progress and understanding


Created by:
Cat Lamin,  
Computing specialist
Cat was a committed primary school teacher for twelve years. After starting her independent consultancy ‘Crossover Solutions’ she has travelled to Argentina, Brazil and America to share her wealth of knowledge of computer science with other teachers. Her enjoyment for…
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