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algorithm
An algorithm gives ordered steps.
Beginner · Other / specialist pathway · Coding
Algorithms and sequences
Write and trace an unambiguous sequence of instructions.
Original Kidemy beginner self-study unit · Learn the idea, try the practical activity and review your written answers. Review your project with a guardian or teacher using the criteria below. Teacher-led course approval and booking are separate.
Learn the idea
An algorithm is a set of steps for a task. Order matters: the same actions in a different order may produce a different result. A useful instruction specifies what to do and how much. You can test an algorithm on paper before using a programming language.
Worked example
Make a paper face: first draw a circle, then add two eyes, then draw a mouth. “Make it nice” is too vague for someone following exact instructions.
- State the start and intended result.
- Write one clear action per step.
- Ask a partner to follow the steps literally and note anything missing.
A different order
Draw a mouth before a face outline: a partner may put the outline somewhere unexpected. Add positions or an order that makes the intended result clear.
Your written practice
Show your working on paper and enter your answer here. If it does not match, compare the model and try again.
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2
The instruction specifies two eyes.
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move 2 squares
It gives an action and an amount.
Write in your own words. A guardian or teacher should review this response.
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Place the pencil; draw four equal sides with right-angle corners; join back to the start.
Accept a clear practical sequence; a teacher may ask for more detailed movement commands.
Write in your own words. A guardian or teacher should review this response.
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The order makes it difficult to put socks underneath the shoes.
Check that the learner explains how the sequence affects the task.
Human robot
Give a partner five precise paper-drawing or movement instructions, then revise one unclear step.
Review with a guardian or teacher
- State the starting position.
- Use explicit actions and amounts.
- Test the revised sequence.
Keep your work on paper or in a local file. This page does not upload it or automatically grade the project.
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