Lesson 3: Abstraction and pattern recognition

Pupils explore both abstraction and pattern recognition and look at how they can help us to solve problems using Scratch

Before the lesson

Download classroom resources

Learning objective

  • To understand what pattern recognition and abstraction mean

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
  • Use logical reasoning to explain how some simple algorithms work and to detect and correct errors in algorithms and programs

Success criteria

Cross-curricular links

Attention grabber

Main event


Pupils needing extra support: May need help with adding new costumes to the existing animal sprite and changing one or two of the broadcast received blocks to reflect the new costumes and words.


Pupils working at greater depth: Should be encouraged to alter both the animal and the food and attempt to alter the text on the Abby sprite to make sure the sentences make sense.

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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