An experimental design by combining hydrogel and ethylenediaminetetraacetic acid disodium salt (EDTA) for visually displaying chemical complexation reactions is developed. The Na[superscript +] ions on the [alpha]-l-guluronic acid (G) unit of the sodium alginate molecule undergo an ion exchange with a divalent cation, so that the G units are…

Anyone who has taught neurophysiology would be aware of recurring concepts that students find difficult to understand. However, a greater problem is the development of misconceptions that may be difficult to change. For example, one common misconception is that action potentials pass directly across chemical synapses. Difficulties may be…

This self-instructional module includes learner objectives, text, practice exercises and answer sheets addressing developments in research on learning environments and why instructional technologists should take the lead in applying the resulting knowledge to the design of training areas. Favorable learning environments are described in general…

This module is designed to give the learner an understanding of the nature of light and how its properties are used in the design of spectrophotometers. Problems promote the use of spectrophotometers in qualitative analysis, the optical elements used in a monochromator, and the physical properties of the prism and the diffraction grating. Other…

This study was directed towards developing microfiche formatting concepts and microfiche production methods to capture the power of the medium for the delivery of both text and illustrations within the context of the Advanced Instructional System (AIS)--a computer based, multi-media, self-paced instructional program of the Air Training Command at…

The major purpose of Project Open Door was to design, develop, test, and disseminate a portable module for vocational educators and others to use with junior high school students in pre-vocational exploration free of sex stereotyping. The module produced contained a slide presentation with accompanying cassette tape and a leader's guide. An…

Designed to address the major conceptual problems associated with light and vision, appearances of surfaces, and color, this module can be used with high school students or college nonscience majors including those in elementary education. It is one in a series developed by the project "Overcoming Critical Barriers to Learning in Nonmajors'…

Unit two of the Spanish as a Second Language curriculum for first graders offers learning and assessment activities designed to provide the English-dominant child with structures and vocabulary he will need for effective communication in a bilingual environment. Activities in kits five-eight, centered around the family, help the child build…

Each of the four kits in this teacher's guide to a Spanish science/math strand for first graders provides for the development of mathematical competencies needed to function in science. Instructional and assessment activities in the bilingual curriculum are pupil centered, and contents are designed to enable the child to develop skills in the…

Basic theme of this teacher's guide is the child in the classroom. Learning and assessment activities are designed to provide the English-dominant child with structures and vocabulary for effective communication in a bilingual environment. Activities help the child build concepts in a new language through formal and informal language experiences…