Here are some online activities that are ready made for using in your speech and language sessions.
Students can also go online at home to review what they have done in class.
I've had students discover what a buffalo is, see a real time video of Old Faithful, discover a sequence picture story about how fossils are formed, and take a virtual tour of the zoo. Realm of Animal Fables and Fairytales - These can be used for working on a speech sound at the reading level. You could also use them for comprehension and vocabulary development. Just have your student think of words containing their sounds, then read their Wacky Web Tale aloud. Lots of fun for 3rd grade and up.