cmpsci1.sda [C64]
This SDA contains files from the Commodore Educational Software series.
cmpsci3.sda [C64]
This SDA contains files from the Commodore Educational Software series.
Note that these are for the C64, but should also work happily on the PET, VIC20 & C128
These can be found here (http://landover.no-ip.com/cbc.html).