Analyzes susceptibility of two African nationalities and American subjects to the Muller-Lyer illusion and suggests that the selective attention hypothesis fails to explain all cross-cultural differences, though instructional set may modify susceptibility. Tables and bibliography. (RW)

Some cautions regarding the early educational uses of optical aids with visually impaired children are suggested, based on widely held assumptions and recent findings in the fields of perception and reading. The change from the sight conservation era to one advocating the maximum use of remaining vision is traced. (Author/SW)

A classroom game using a group of photographs from which students must derive a story is outlined. Beyond the original game, suggestions are given for further discussion, activities, and manipulation of the materials. Three series of photographs are provided as examples. (MSE)

Describes an experiment enabling students to apply concept of diffraction, determine limits of their color perception, learn how to measure wavelength with a simple apparatus, observe continuous and line spectra, and associate colors with corresponding wavelengths. The homemade diffraction-grating spectrometer used is easily constructed. (JN)

Describes inexpensive method of determining harmonic content of a repetitive signal such as a sound wave and demonstrations of the precession of a bicycle wheel and inversion shadows on the retina. Also describes a resonance demonstrator (made from scrap material) driven by a portable jigsaw. (JN)

This brief survey of successful visual literacy programs designed for students at the elementary and secondary level outlines projects to teach visual communication skills in Ohio, Indiana (Project Visual Understanding in Education/VUE), Virginia, Iowa (Media NOW), California, Canada, England, and Australia (Visual Education Curriculum Project).…