Task 5 Objectives: Today you will learn: · How we can make control systems more efficient by using subroutines. I am looking for you to: · Explain what a subroutine does · Recognise where a subroutine could be used · Create a subroutine · Use a subroutine to carry out repeated instructions making your flowchart more efficient.
	Teacher feedback wiki
Instructions		Help and Resources	Examples		Time
		Welcome
5.1 Watch the slideshow of a flashing light.		View Flashing Light			5
5.2 Discuss Teacher resource 7b. This shows how a program can be broken down into subroutines to make it more efficient.		View Cleaning Shoes			10
5.3 Discuss the Lighthouse Planner and complete the tasks.		Save Lighthouse Planner	Save this file to My Documents and open from within FlowOL		25
Extension Return to the Pelican program you wrote in an earlier lesson. Use a sub routine to make the green pedestrian light flash five times before the red pedestrian light comes on.
Plenary		View Plenary			10

Teacher info: KS3 Strategy lesson plan

Keywords:

From Year 6: procedure, refine, switch

From Year 7: improve, subtask, system