The Light Bulb |
Prerequisites
You should have looked at the following tutorials:
Resources
You will need a browser which can display images. If you are unsure
about what your browser can do then check the example page.
How do you use this tutorial ?
Each page will contain a lesson and a question. You will need to answer the question
correctly to proceed to the next page of the lesson. The question may be in a form
which requires you to select a link or you may have to click on a point on a
picture. If your answer is incorrect then you will be taken to a page which explains
why the answer was incorrect. Use the navigation bar on the page or the navigation
facilities provided by your browser to go back to the question page and try again.
From this page you can use the navigation bar below to progress to the
next page in the lesson.