This should definitely be in the running for Exhibit A when you get into the argument that the computer adds more to the learning environment than just a textbook.
The topic is science and how does your body generate sounds.
Now, back in the day, I remember how I learned about this. There was this picture in the textbook and we were given handouts and were told to label the various parts.
That was pretty much it.
What if you could simulate things? Well, you can with the Pink Trombone.
This is so cool.
Grab your mouse or you finger and explore the various parts of your inner mouth. Well, maybe not your mouth but a really good simulation.