A simple classification system for terrestrial plants is presented. The method is based on growth forms and avoids the need for identification to genus or species, although students could be encouraged to follow the work through to this level if appropriate. (Author/JN)

Presented are several classroom activities using fish. These include gyotaku (Japanese fish printing), use of a dichotomous key to classify fish, "invent-a-fish" activities, and others. Includes discussion of fish facts and copies of fish key and invent-a-fish cards. (JN)

Describes laboratory activities using algae as the organisms of choice. These include examination of typical algal cells, demonstration of alternation of generations, sexual reproduction in Oedogonium, demonstration of phototaxis, effect of nitrate concentration on Ankistrodesmus, and study of competition between two algae in the same environment.…

Frequent spring showers provide many opportunities for rainy-day walks and playground activities. Examples of indoor and outdoor water-related activities are provided. Children could study ripples outdoors by dropping objects in puddles. Rain water could be collected in containers of various shapes and studied indoors, introducing students to…

Suggests using "fasteners" as the basis of activities for nursery and kindergarten children. Fasteners include those worn by children (buttons, zippers, belt buckles, shoe laces, and others) and those used in such areas as art. A "fastener walk" is also suggested to observe such fasteners as hinges, clothespins, and others. (JN)

The Grand Canyon, the natural wonder visited most often in the United States, is explored on foot, on burro, and by boat in this article. Learn about the canyon's different rock layers as well as its erosion, plant life, animal life, and water flow. (JM)

A science research program in Ohio using community laboratories and personnel offers gifted high school students the chance to become involved with scientists in a variety of research experiences. Cooperation between community based staff and program staff is critical. Results of the six-year program have been very favorable. (CL)

Outlined are two experiments using liquid membranes that illustrate carrier-facilitated transport, where chemical species are ushered across the membrane by selective "carrier" molecules residing in the membrane. The use of liquid membranes as models for studying and describing biological transport mechanisms is explored. (CS)

Describes a series of easily constructed octahedra having surface facets so that each displays one of the cubic point group symmetries. These may be used simultaneously with other kinds of models to provide within each point group several objects for comparison and study. (Author/SK)

Illustrates and outlines steps for constructing models of twin octahedrons and a rhombohedron. (SK)

A photovoltaic cell experiment utilizing the convenience of a solar simulating type lamp is described. Insight into the solid state aspect of a solar cell is gained by the student in studying the characteristics, and deducing from them cell parameters and efficiency. (Author/CS)

Describes a laboratory exercise requiring students to separate a selected number of organisms into groups of increasing similarity and to relate these groups directly to the kingdom-species system of classification. (Author/MA)

Describes the collection and culturing of microscopic molds that feed mainly on tiny nematodes in the soil. Includes bibliography. (MA)

Described is an annual science bowl held in Havenscourt Junior High, Oakland, California, for ninth grade science students. Patterned after TV's "College Bowl," the science bowl involves panels of students competing to answer objective questions and practical challenges. Indirect benefits to students include increased community support and review…

Presents a physical chemistry experiment demonstrating the differences between thermodynamics and kinetics. The experiment used the formation of phenol and acetone from cumene hydroperoxide, also providing an example of an industrially significant process. (CS)