A study guide is a resource designed to help students review and understand material for exams or assignments. It often includes summaries of key concepts, important terms, and practice questions. Study guides can be created by teachers, publishers, or students themselves, and they serve as a useful tool for organizing information and enhancing learning. These guides can cover a wide range of subjects, from mathematics to literature. They may also include visual aids like charts or diagrams to help clarify complex ideas. Overall, study guides aim to make studying more efficient and effective, supporting students in achieving their academic goals.