Year 7 - Computing
Sequence
Using fundamental programming constructs in a block-based language
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This pupil-friendly study guide includes a unit summary, clear notes, common mistakes, and quick questions with answers.
Unit Summary
In this unit pupils will build their confidence and knowledge of the key programming constructs (sequence, iteration, selection and variables). Learners will use Scratch to explore the key programming constructs firstly through editing pre-existing code and then by developing their own programs.
Lesson Summary
You will learn to use subroutines to execute sequences of commands.
Key Notes
- Computers only follow the commands they are given, so these need to be precise and accurate.
- Commands can be joined together to create sequences in Scratch to achieve a desired outcome.
- Sequences can be separated into individual subroutines.
- Programs should be written so that other people can easily understand them. Subroutines are used to do this.
Vocabulary To Learn
- execute: to run or carry out the commands in a program
- sequence: the order of commands in a program
- subroutine: a sequence of instructions with an identifiable name that performs a specific task
Common Mistakes To Avoid
- A sprite in Scratch can only have one sequence of code blocks.
3 Quick Questions (With Answers)
1. Describe the system or process from this lesson in clear steps.
Computers only follow the commands they are given, so these need to be precise and accurate. Commands can be joined together to create sequences in Scratch to achieve a desired outcome.
2. Define this computing term and give one practical example. 'execute'
to run or carry out the commands in a program. Add one real device or system example to prove understanding.
3. Correct this common computing misconception.
Mistake: A sprite in Scratch can only have one sequence of code blocks. Correction: Sequences of code can be separated into subroutines and these subroutines can be called multiple times.
More Lessons In This Unit
Browse all guides in the Year 7 Computing guide library.