In this lesson you will learn about scope of variables. When a variable is initialised within a subroutine it cannot be easily accessed and modified by other subroutines. This lesson will teach you about the different levels of scope and show you how to access variables that are initialised within subroutines.
Click on the play button to start the video. If your teacher asks you to pause the video and look at the worksheet you should:
- Click "Close Video"
- Click "Next" to view the activity
Your video will re-appear on the next page, and will stay paused in the right place.
These slides will take you through some tasks for the lesson. If you need to re-play the video, click the ‘Resume Video’ icon. If you are asked to add answers to the slides, first download or print out the worksheet. Once you have finished all the tasks, click ‘Next’ below.