Computer Science Algorithms Worksheet (KS3 / GCSE)

Computer Science Algorithms Worksheet (KS3 / GCSE)

This worksheet introduces students to algorithms using clear, engaging examples based on everyday tasks. By breaking down familiar activities into step-by-step instructions, students develop a strong understanding of how computers follow precise sequences to solve problems.

Students explore:
• What an algorithm is
• Writing and refining step-by-step instructions
• Ordering steps logically
• Using loops to repeat actions
• Using selection (select case and if statements) to make decisions

The worksheet includes a structured activity where students:
• Create their own algorithm for getting dressed
• Refine and reorder steps
• Apply conditional logic based on real-world situations
• Write a full algorithm using code-style statements

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Suitable for:
• KS3 Computing
• GCSE Computer Science (foundation concepts)
• Cover lessons
• Homework or independent study
• Introduction to algorithms and computational thinking

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Key features:
• Clear explanations using everyday language
• Encourages logical thinking and precision
• No prior programming knowledge required
• Ideal for discussion, pair work, or written tasks

This resource is designed to build strong foundations in computational thinking and works well alongside programming lessons or interactive activities.