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Cool beans, I agree with what Raven had to say and would add that microscopes are actually very hard for young people to learn to use properly. They sometimes have a hard time looking into the eyepiece in a relaxed way and rather try to focus their eyes on the eyepiece rather than looking into infinity. This makes it hard to see the sample. If they use a binocular setup they sometimes can not see through both eyepieces because the student's interpupilary distance is smaller than the microscope's. Therefore having a static image of something familiar is a great idea because they now know what the sample should look like and not have to guess if they are seeing what a teacher is describing to them. That way they can concentrate on learning how to use the microscope and not get distracted by a cool sample. I just hope that they graduated to more interesting microscopic samples!
For full disclosure I teach microscopy techniques and use microscopes daily.
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