Teaching aids are tools that teachers use to help students improve their skills and understanding. They illustrate concepts, relieve anxiety, and engage students. Teaching aids motivate students and help clarify lessons. They encourage understanding over cramming and make classrooms more lively and active. Teaching aids provide direct experiences and involve multiple senses, with audio, visual, and audiovisual aids. Effective teaching aids are meaningful, accurate, simple, inexpensive, easily updated and seen by students, appropriate to students' levels, and motivating.