Note cards can be used for vocabulary, formulas, concepts, questions, etc. Take a stack of index cards with you to your session and have the students construct the cards during the session. Be sure to show the students how to make them and how to use them during your session.
Write the cue or question on one side of the card and write the definition, description, or answer on the other side.
Note cards are also portable and can be used as a quick review before tests and exams. Encourage the students to place the relevant cards in a place where they can see them regularly to assist them in remembering important information.
You can also construct note cards (flashcards) in an app during your session and share among participants. Use an app that allows for spaced repetition to optimize memorization of the targeted course information.
Examples of flashcard apps: Anki, Brainscape, cram.com