The ActivPhysics 1 CD-ROM and accompanying workbook use visualization, simulation, and multiple representation to help students become active participants in any introductory physics course. Topics include mechanics, thermodynamics, and waves. Instructors can customize lecture notes and classroom demonstrations using ActivPhysics 1 through an included electronic notebook. Users with access to the World Wide Web can link directly to the Internet and connect to external Web resources. The CD-ROM is cross-platform, for Windows and Macintosh.