We’ve tried a few from the basic plastic ones just to get you interested in what you can see to a little more expensive and capable of some quite reasonable reproductions of those text book photos like the “Onion Skin” slide. It’s like all things, you get what you pay for and I wish I had paid a little more in the beginning, rather then keep trying cheaper models in the hope of finding the right one. You don’t want to be spending time sorting the optics, the student’s will get restless and move off and you will have wasted time and money.
These are some scopes that look like they fit the bill from low end and mid range. I’ve also added a couple of items that are basically pre-prepared slides. These already have specimens on glass so all you have to do is up them on the microscope stage and view them. No hassle and a great way to get started.