Unit+6+Task+5


 *  [[image:Task1.gif link="Unit 6 Task 1"]][[image:Task2.gif link="Unit 6 Task 2"]][[image:Task3.gif link="Unit 6 Task 3"]][[image:Task4.gif link="Unit 6 Task 4"]][[image:Task5.gif link="Unit 6 Task 5"]][[image:Task6.gif link="Unit 6 Task 6"]]

Task Five Objective s : ** 
 * 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
 * r ecognise where a subroutine could be used
 * create a subroutine
 * u se a subroutine to carry out repeated instructions making your flowchart more efficient.

**2** Discuss [|cleaning-shoes.ppt]. This shows how a program can be broken down into subroutines to make it more efficient. **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. **4 View [|plenary.ppt].**
 * Task Five instructions:**
 * 1** Watch the slideshow of a flashing light. **View [|flashing-light.ppt]**.
 * 3** Discuss [|lighthouse-planner.ppt] and complete the tasks. **Save**  this file to My Documents and open from within FlowOL [|LIGHTHO.FLO.txt].


 * Teacher Help:** [|7.6.5_Teacher Help.doc].