Describes apparatus/methodology and provides background information for an experiment demonstrating electrochemical concepts and properties of electrochemical cells. The color of a solution close to an electrode is changed from that of the bulk solution to either of two contrasting colors depending on whether the reaction is oxidation or…

Provides background information and methodology for an experiment in which a mixture of o-, m-, and p-hydroxyacetophenones are separated by thin-layer chromatography (TLC) and in which the constituents are identified and estimated by ultra-violet light spectroscopy. (Author/JN)

Suggestions are presented for 23 different hikes appropriate for school grounds and other similar settings. Topics which focus on science processes and skills include, among others, motion, color, shape, size, smells, sounds, trees, litter, and snow. (DC)

Describes a simple, inexpensive continuous culture apparatus (chemostat) and its applications in teaching biological concepts (growth-limiting factors and competition). Other suggested uses include experiments in enzyme induction, biosynthesis, and strain selection, and for student research projects. (JN)

Aluminum foil can be used to make impressions of structures preserved in sedimentary rock. The impressions can be projected onto a screen, photographed, or a Plaster of Paris model can be made from them. Impressions of ripple marks, mudcracks, and raindrop impressions are provided in photographs illustrating the technique. (Author/JN)

Discusses the current theories concerning the evolution of insect-plant relationships. Offers several experiments based on recent publications in this field, concerning relationships between herbivore number and plants' successional status, geographical range, geological history, and stage of growth, and also experiments on the chemical basis of…

Develops a rationale for integrating oceanography and marine education in land-oriented curriculum at the secondary level. Examples of topics with a multidisciplinary approach are described in the areas of acoustics and music, aquaria, archeology, art, astronomy, literature, careers, ecology, gastronomy, geology, and topics on various aquatic…

Describes the Science Activity Teaching model, which incorporates five teacher managerial behaviors into a model with these subcomponents: focus activity, student instructions, student group activity, synthesizing, and evaluation. This plan provides for the development of fate control, language formation, and social skills. (CS)

Presents five activities that combine art and biology skills: (1) creating a work of art based upon microscopic observations; (2) collecting patterns found in or on or produced by organisms; (3) making bio-sculptures; (4) creating a creature; and (5) visually expressing an organism or biological concept. (DC)

Described is a unit on rockets which begins with watching a film and ends with teams of students launching their own rockets. Activities teach students metric measuring, data collecting and graphing, report writing, and calculating, as well as group skills and model building skills. (DC)

Presents position statements indicating the necessity of laboratory experiences for the teaching and learning of science in the elementary school. Three different perspectives are addressed: research, curriculum, and teaching. (DS)

Describes a science program developed by the Cleveland Museum of Natural History, "Nature in the City," in which students and teachers learn together about the natural community surrounding their school. Includes program's rationale, list of "adventures," and methods. Discusses strategies of Sherlock Holmes'"adventure" focusing on animal tracks…

Reported is a technique for chromosome staining that is simple, rapid, inexpensive, and requires little skill for success. (PB)

Described is one school's approach to elementary science. The program is designed to meet the needs of the gifted and talented students as well as to develop the talents of all the children through an interest-centered approach to science. (CS)

Describes experiments in which inexpensive or standard laboratory equipment is used to measure several macroscopic magnetic properties of thin rare earth garnet films used in the manufacture of magnetic bubble devices. (Author/CS)