You'll join this lesson in progress at "Exploring the Airplane You Will Fly." Follow along as demonstration completes the three unchecked sections of the lesson. Watch the modified video presentations and review the interactive quizzes. These demonstrations of Computer-Based Instruction have been specially modified to work on the older versions of web browsers; consequently, their performance is not equal to the high quality interactivity of CBI. You'll need Netscape Navigator version 4.0 or Microsoft Internet Explorer version 4.0 to see the fully functioning demonstration.