The term STUDYING AID can be represented by the crossword solution NOTES, which is a five-letter word. NOTES are a type of studying aid that are used to help students remember important information from lectures or readings. NOTES can be taken in various forms, such as written NOTES, audio recordings, or even video recordings. NOTES can also be organized into categories and subcategories to make them easier to review. Taking NOTES is an effective way to help students remember and understand material, and it can be a great studying aid.