Music Tutor.Com
Includes fabulous music worksheets that teach note and rest values.  Crossword puzzles and wordsearch puzzles are also present.
http://lessontutor.com/musicgenhome.html

Can Teach
Offers lesson plans for teaching rhythm, conducting and melody.  Also has online lessons and music and glossary of music terminology.
http://www.canteach.Ca/elementary/music.html

Sheet Music Online
Includes approximately forty free progressive study worksheets teaching basic music reading skills.
http://www.sheetmusic1.com/new.child.mus.ed.html

Music Printables
Contents include wordsearch puzzles, worksheets and charts.
http://www.kidsdomain.com/brain/music/print.html

Fun Music Ideas
Offers online lessons to be done in the classroom or at home.  Worksheets, homework help and quizzes.
http://www.funmusicideas.com/

Mrs. Carroll's Music Room
Includes a wonderful webquest for students to complete as well as online games for students.
http://webtech.kennesaw.edu/lland/

Martin Visser's Home Page
Fabulous worksheets relating to note placement and music terminology.
http://www.hinet.net.au/~mvisser/musictut/

The Music Cornor
Worksheets, wordsearches, practice charts and an index of other resources are all available here.
http://www.musiccorner.co.uk/free_teacher_resources_index.htm

First School Years
Offers worksheets and QCA schemes of work for music under the resource heading.
http://www.firstschoolyears.com/music/mussheets.html

Lesson Plans Page
Includes lesson plans on instruments , rhythm, melody, dynamics and compositions and also has games.
http://www.lessonplanspage.com/Music23.htm