Finally this morning, here is a reading on Plato and its accompanying vocabulary-building and comprehension worksheet if you teach him in the context of global studies, English language arts, or even a philosophy class. This is a short but solid general introduction to ancient Greek thought in general and Plato in particular.
If you find typos in these documents, I would appreciate a notification. And, as always, if you find this material useful in your practice, I would be grateful to hear what you think of it. I seek your peer review.