Uses photomicrographs to illustrate the advantages of simple phase optics for microscopy in school biology teaching. (AL)

Describes the role of South Australian schools in the testing of units prepared by a national science curriculum development project preparing materials for grades 7-10 and answers questions concerning the nature of the materials. (AL)

Distinguishes between Computer Extended Teaching (using computers as aids), Computer Assisted Teaching (using computers as an integral part of the instruction) and Computer Based Teaching (the computer-student dialogue is the major component of instruction). (AL)

Suggests suitable species of microscopic green algae for demonstrating diversity of form, increasing complexity in related species, the animal" and plant" characteristics of protists, and protist behavior. (AL)

Student comments from eight year and year 10 classes in Australia are given. (RH)

Outlines the basic ideas which explain the movement of sand in air and water. Uses the behavior of spheres as a model to indicate the behavior of sand grains. (GS)

Describes the construction of a rotating shutter for producing multiple flash photographs in studies of moving objects. (AL)

Describes how to clear water from gas taps in the laboratory using simple equipment. Includes a diagram of the equipment set-up. (BR)