Year 7 - Computing
Count-controlled iteration
Using fundamental programming constructs in a block-based language
Study Hub
Study Guides
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 count-controlled iteration to repeat a sequence of commands a set number of times.
Key Notes
- Iteration can be used to repeat sequences of commands in a program.
- Condition-controlled iteration will execute until a condition is met or is no longer met.
- Count-controlled iteration will execute a set number of times.
Vocabulary To Learn
- iteration: the process of repeating a sequence of instructions within a program loop
- count-controlled: a command that repeatedly runs a sequence of instructions a predefined number of times
- condition-controlled: a command that repeatedly runs a sequence of instructions until a condition is no longer being met
Common Mistakes To Avoid
- Iteration means a program will repeat something a set number of times.
3 Quick Questions (With Answers)
1. Describe the system or process from this lesson in clear steps.
Iteration can be used to repeat sequences of commands in a program. Condition-controlled iteration will execute until a condition is met or is no longer met.
2. Define this computing term and give one practical example. 'iteration'
the process of repeating a sequence of instructions within a program loop. Add one real device or system example to prove understanding.
3. Correct this common computing misconception.
Mistake: Iteration means a program will repeat something a set number of times. Correction: Count-controlled iteration will repeat a sequence of commands a set number of times. Condition-controlled iteration will repeat a sequence of commands until a condition is met and so the number of times it will repeat can never be predicted.
More Lessons In This Unit
Browse all guides in the Year 7 Computing guide library.