The first trial edition of the Australian Science Education Project unit introducing the concepts of electrical charge consists of a student workbook, question booklet and a response sheet, and a booklet containing answers to the questions in the workbook and question booklet. The teacher's guide outlines the unit, lists suggested teaching techniques and necessary apparatus for the core activities and each of the six options available to students, and lists expected outcomes of the unit. The core activities lead to the generalization that like charges attract and unlike charges repel. The options concern the effects of charges in industry and everyday life, a model of ionic crystals, electroplating, electric cells, tests of electrolytes, and the historical development of the concepts of charge (Franklin, Volta, Galvani). The emphasis throughout is on individual or small group self-paced experimentation using the student booklet as a guide. (Available on loan from ERIC SMEAC.) (AL)