This is like a music theory textbook online. It includes great explanations and assignments, although there is not a way to check your completed assignments. It begins with the basics and goes through triads. Midi files are included.

Flash cards are an excellent way to help you learn various topics. These online music theory flash cards can help you learn note names, intervals, notes on the piano and several other topics.

To explain the basics of triads and the different positions

A music theory worksheet regarding inverted triads. Requires Adobe Reader [PDF].

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.

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.

A music theory worksheet regarding triads within tonality. Requires Adobe Reader [PDF].

A music theory worksheet regarding triads. Requires Adobe Reader [PDF].

To explain how to name common chords based on the relationship to the tonic of the note in the chord

To explain how different chords are named based on their position

A comprehensive summary of basic music theory. Commentary is thorough yet practical. Information on tonality, chords, scales, cadences, etc. This pages is on diatonic scales.

To introduce harmonic analysis of chords and provide an overview of the relationship of chords, keys, and triads