here and here) about some methods to throw on some Midi files and follow then through software, but for really low maintenance, casual score-following, these Youtube vids are very handy. Also they are performed by real people on real pianos, that never hurts....Saturday I already posted one of these "Sonata-scores" (Pathetique by Annie Fischer) so here's a few more....
11 Bagatelles, Opus 119 (various composition dates) by Alfred Brendel (13 min)
Bagatelles 7-11 (performed by Roland Pöntinen at Stockholm Konserthaus, since Bagatelle 8 was missing in "Big Al's set")
Piano Sonata No. 2 Op. 2 No. 2 (Murray Perahia, pt 1-4)
Of course nowadays there's Mario Paint, I suppose to get the kids interested?