- Fully resourced KS3 Computer Science lesson introducing subroutines in Flowol and how they are used to simplify complex control systems.
- Starter tasks recap algorithms, loops and routines, and include a drawing activity where students sequence real traffic light patterns.
- Builds conceptual understanding by asking students to explain why traffic lights follow a specific pattern, linking to real-world automation.
- Main Flowol task: pupils recreate a lighthouse using subroutines, developing structured, reusable code.
- Students record screenshots of evidence and answer questions on what subroutines are and why they are beneficial.
- Royal Wootton Bassett traffic scenario: learners complete a pelican crossing routine that triggers a subroutine when the button is pressed.
- Includes clear “Is it OK to move on?” checkpoints for self-assessment and pacing—ideal for mixed-ability classes.
- Challenge activity: control a robot using multiple button-activated subroutines, reinforcing algorithmic thinking and problem solving.
- Strong focus on building independence—step-by-step tasks, scaffolded questions and video help links make the lesson accessible for specialists and non-specialists.
- Lesson objectives include: consolidating decision statements, understanding and applying subroutines, and modelling real automated systems.
- Ideal for KS3 Computing and an excellent foundation for GCSE algorithm, programming and control system topics.
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