Rhythm & Melody Flash Cards for 4th & 5th grades.
I either have them laminated or I print them on my home printer on old manila folders that I cut into 8 1/2" x 11". Then I either put them in envelopes or ziploc bags. You only have to make 15 sets for a 30-student class. (I have them share and test each other.)
Rhythm Cards - front and back
Treble Clef cards - front only.
(On this last sheet, I only use high G, not the ledger lines.)