Notation introduction – musictheory.net
Flash Notes (fast!) – online treble clef notation quiz (from pedaplus.com).
Flash Notes 2 – more forgiving version of the quiz (from pedaplus.com).
Melody game – repeat the melody to win!
Playing practice – At musictechteacher.com
More practice 1 – Au Clair de la Lune
More practice 2 – Ode To Joy
More practice 3 – Row Row Row Your Boat
Staff paper – print it out and write your own music
Your song, on staff paper, will need to consist of exactly four lines of notes. Follow these guidelines to choose from the notes listed for each line:
Line 1 (8 notes) — C D E F G A
Line 2 (6 notes) — D E F G A B
Line 3 (6 notes) — E F G A B
Line 4 (8 notes) — C E F G A c