"...There are countless learners in classrooms everywhere who would struggle to be successful with a written recipe. Many of these learners would do just fine with a recipe presented in video format. This illustrates the imperative that learners be offered information in multiple formats."
For students who find it difficult to work with text video provides an alternative format to learn information. "Text is only one way to share information. Numerous alternatives are equally effective, if not superior."
CK-12, a website that provides free materials for educators and students across grade levels. This link goes to a new series of physics simulations. However, if you work with students and are interested in finding great free resources that include video, text, audio, images, quizzes and interactives then it is worth your time to explore CK-12.