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Year 10 - Computing

Tracing algorithms

Algorithms

Unit Summary

In this unit pupils will discover the computational thinking techniques; decomposition, abstraction and algorithmic thinking. They will reflect on differences between algorithms and computer programs and explore how algorithms can be represented. Pupils will explore the impact of algorithmic bias.

Lesson Summary

You will learn to use trace tables to test the logic of an algorithm.

Key Notes

Trace tables can be used to walkthrough and understand the logic of an algorithm.
Trace tables can be used to help find logical errors in algorithms.

Vocabulary To Learn

trace table: a tool used to track the values of variables and the flow of execution in an algorithm or program, step by step
error: a mistake or unexpected behaviour in a program that prevents it from working correctly
modulo: an operation that gives you the remainder when one number is divided by another

Common Mistakes To Avoid

Using trace tables guarantees correct logic and code.

3 Quick Questions (With Answers)

1. Describe the system or process from this lesson in clear steps.

Trace tables can be used to walkthrough and understand the logic of an algorithm. Trace tables can be used to help find logical errors in algorithms.

2. Define this computing term and give one practical example. 'trace table'

a tool used to track the values of variables and the flow of execution in an algorithm or program, step by step. Add one real device or system example to prove understanding.

3. Correct this common computing misconception.

Mistake: Using trace tables guarantees correct logic and code. Correction: Trace tables can be subject to human error and can be impractical to use for complex algorithms.

More Lessons In This Unit

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