Multimedia is an effective tool to enhance learning because with visualization, sound, and interactivty, all learning modalities are used. Learning is emotional. Color, music, and animation enhance the experience. Interactivity allows students to follow different paths, explore and discover. Interactive students become active learners.
Immediate feedback helps students develop strategies and confidence.
Using multimedia reduces the time need to learn a concept and increases retention. There are no miracles needed to learn math and no magic required to solve math problems.