Wolfram has posted some very nice examples of documents in the CDF format.
Many of them would be very nice to use for classroom presentations.
In particular the file "Adopting CDF" has a really nice way of moving between parts of the document.
I tried to decipher it, but with all the graphics used, it's not really easy to get at the parts and try to use them.
I wonder if anyone in the forum has looked at this example, and might be able to produce a "toy" version that could be experimented with more easily.