It is really important to make sure that you do as much as you can to avoid user error in your programs. Data validation has been touched on a little throughout Part 1 and Part 2 of the programming units. In this lesson you will take this a step further by applying data validation through iteration.
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.