Comparing algorithms to computer programs
Lesson details
Learning outcome
I can describe the differences between algorithms and computer programs.
Key learning points
- An algorithm is a series of defined logical steps that can be followed to solve a problem.
- A computer program is a way of implementing an algorithm, by writing it in a language that a computer can understand.
- A single algorithm can be implemented in many different computer programs.
Keywords
Algorithm - a set of step-by-step instructions to solve a problem
Computer program - a way of implementing an algorithm by writing it in a language that a computer can use
Logic - a system of rules that determine the flow of instructions
Common misconception
Algorithms and computer programs are actually the same thing.
A computer program is a specific implementation of an algorithm's logic. A clearly written algorithm provides instructions that can be implemented in various ways including, but not limited to, computer programs.
Teacher tip
If learners are in a group setting, encourage them to discuss their understanding of the differences between algorithms and computer programs in pairs and then give examples. Try to encourage learners to consider how they may already use algorithms to solve everyday situations without realising it.
Licence
Lesson video
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Prior knowledge starter quiz
6 Questions
Q1.What is computational thinking?
Q2.Which computational thinking technique focuses on important details and ignores irrelevant ones?
Q3.Which computational thinking technique involves breaking a problem into smaller, manageable parts?
Q4.Which computational thinking technique involves creating logical, step-by-step instructions?
Q5.Which of these is an example of abstraction?
Q6.What is the main goal of algorithmic thinking?
Assessment exit quiz
6 Questions
Q1.Match the term to its definition.
a set of step-by-step instructions to solve a task
instructions written in a programming language
a system of rules that determine the flow of instructions
Q2.Which of the following is an example of an algorithm?
Q3.What is a set of step-by-step instructions to solve a task called?
Q4.Why is logic important in algorithms?
Q5.What makes a computer program different from an algorithm?
Q6.What is another key difference between an algorithm and a computer program?
To help you plan your 10 computer science lesson on: Comparing algorithms to computer programs, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your 10 computer science lesson on: Comparing algorithms to computer programs, download all teaching resources for free and adapt to suit your pupils' needs.
The starter quiz will activate and check your pupils' prior knowledge, with versions available both with and without answers in PDF format.
We use learning cycles to break down learning into key concepts or ideas linked to the learning outcome. Each learning cycle features explanations with checks for understanding and practice tasks with feedback. All of this is found in our slide decks, ready for you to download and edit. The practice tasks are also available as printable worksheets and some lessons have additional materials with extra material you might need for teaching the lesson.
The assessment exit quiz will test your pupils' understanding of the key learning points.
Our video is a tool for planning, showing how other teachers might teach the lesson, offering helpful tips, modelled explanations and inspiration for your own delivery in the classroom. Plus, you can set it as homework or revision for pupils and keep their learning on track by sharing an online pupil version of this lesson.
Explore more key stage 4 computer science lessons from the Algorithms unit, dive into the full secondary computer science curriculum, or learn more about lesson planning.