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Algorithms & Debugging — Year 4 Computing

Algorithms & Debugging — Year 4 Computing

Subject: Computing

Age range: 7-11

Resource type: Lesson (complete)

Last updated

19 July 2026

pptx, 957.97 KB
pptx, 957.97 KB

A ready-to-teach PowerPoint scaffold for a one-hour Year 4 computing lesson on algorithms and debugging — completely unplugged, no devices needed.

Children learn that an algorithm is a set of clear, ordered steps, see why sequence matters, fix a buggy “sandwich algorithm” and program a partner as a robot.

Visual, engaging and low-prep, covering the KS2 objectives on writing and
debugging programs.

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