TimeLine Machine PLUS is a series of easy-to-use, history-based software programs that introduce students to ancient and U.S. and World history via 450+ lesson plans and reproducibles, and a searchable database of more than 900 events and people throughout history. U.S. History covers events from early exploration to the present; Ancient Civilizations covers events that occurred from the Ice Age to the fall of Rome; and World History includes time lines beginning with the fall of Rome to the present. Package includes add-on date files. System Requirements: Macintosh: PowerPC processor-based Macintosh computer, at least 32 MB of RAM (64 MB highly recommended), Mac OS 7.5.5 or later. Windows: Pentium-based PC or compatible computer, at least 16 MB of RAM (32 MB recommended), Windows 95/98, or Windows NT 4.0. 3 Hybrid CDs/3 Binders