Discusses online help systems in application software design and describes two experiments in which adult computer novices learned to use experimental graphics software by task-based exploration. Topics include operative help; function-oriented help; effects on learning performance; schemata; mental models; and implications for the design of…

Describes a spreadsheet system that enables students, teachers, and curriculum developers to use Microsoft EXCEL's database and graphics capabilities in the science classroom. System design goals are explained, examples of system applications are given, and possible future developments are discussed. (15 references) (LRW)