Science directions. Book 4 / project editor, Howard Clark ; program consultants, Douglas A. Roberts, Trudy L. Rising ; author team, Howard Clark ... [and others]
Adapted from: Science directions. Toronto : J. Wiley, 1990, c1991
Accompanied by Teacher's guide on disk
System requirements for accompanying disks: IBM PC or compatible 386 or 486 (486 recommended); at least 4Mb RAM; Microsoft Windows 3.1 or later; Adobe Acrobat Reader 2.0 for Windows (included with disks); 1.44 Mb diskette drive