ELTKDT_R.IMD - Early Learner's Toolkit data disk (right)
ELTKSY_L.IMD - Early Learner's Toolkit system disk (left)
LOGOPROF.IMD - LOGO Professor Program Disk
MATHPROF.IMD - MATH Professor disk (left)

The LOGO Professor and MATH Professor only have a few tracks formatted.

fjk,20070303