Music Theory
Music theory.net: Rest Duration
A wonderful resource for teachers and students! Gives examples and explanations of rests and how they affect the sound of a musical piece. Simple illustrations and explanations make this animated site easy to follow.
Other
Music Theory First Aid for Struggling Students
This site provides music theory information on such topics as rhythm, intervals, scales, chords, etc. Also, there is a fine section which describes the basic concepts of form and structure.
Music Theory
Music theory.net
An online beginning music theory and ear training site. This site is for students to use at home to reinforce what they learn in class.