Links:

Michael Hopkins String Pedagogy Notebook
http://stringtechnique.com/

Mimi Zweig String Pedagogy
http://stringpedagogy.com/

Teoria Music Theory
http://www.teoria.com/tutorials/reading/index.php

Patti McCarty's website for violists:
http://www.ashmontmusic.com/mccarty/intro.html
Includes articles on Romantic Repertoire, American Solo Works, Warmups, Spiccato, Orchestra Auditions, and Alto Clef For the Violinist

Warm-up Exercises:

Warm-up exercises (Word document)
Pelvic Clock (movie)
Isn't She Lovely (movie)
Hand Warm-up Demo (movie)

Websites and fact sheets on composers:

Keeping Score: From the San Francisco Symphony, this site provides a comprehensive overview
of significant composers, their technique and major works.

Geography of Music: Interactive maps connecting composers with time periods and significant
historical events.

PBS Great Composers Series: Links to videos on major composers.

New York Philharmonic Kidzone: Composers Gallery: Great online resource for introducing students to major composers.

Great Composers: From Arts Alive, the National Arts Centre of Canada. Features comprehensive
overviews of composers, audio samples and teacher resource kits.