Feeling that projects in chemistry could be used effectively to enhance appreciation of chemistry, a project-based course for the first-year sixth formers was developed in 1973 and because of its success another was organized. Projects from both courses are described. (EB)

Presents a series of lessons, developed to give children the opportunity to construct a classification system for animals and to analyze the classification. Procedural information and suggestions for preparation of materials are included. (Author/EB)

Details the latest methods in analyzing soils and suggests projects that can be carried out on demonstration plots. Also includes a bibliographical listing of references on soil science. (BR)

A method is described for the construction of 3-dimensional map models which are portable and strong enough to be taken into the field. The construction method involves alternating portions of colored maps between sheets of perspex of a thickness which will give the vertical exaggeration desired. (BR)

Presents an experimental design for feeding experiments requiring minimal equipment, small numbers of animals, and limited expenses. These projects provide insights into animal nutrition, food selection, animal behavior and animal husbandry. (Author/GS)

Describes the preparation of a compound that is of particular interest because of its sandwich structure in which the metal atom is sandwiched between two planar C5H5-rings. Sublimation results in the formation of long thin plate-like crystals. (GS)

Describes the commercial uses, industrial production and laboratory production of 2-methylpentane-2,4-diol. Suggests extensions for the experiment in the areas of boiling point/composition curves and alkaline depolymerization. (GS)

Description of the organization of the Academy and its contributions commemorates its 250th anniversary in 1974. (ND)

Describes an inquiry appraoch in which tree growth-ring analysis is used to determine the age of a tree, trace flood history, and investigate environmental effects on tree size. (MLH)

Describes various topics which can be used to organize lesson plans for elementary school activities concerning the theory of light. Lists general and specific objectives for the lesson plans. (MLH)

This procedure, using polystyrene spheres of specified diameter, renders the Millikan oil drop experiment more accurate than the conventional procedure of the polystyrene spheres, eliminates size estimation error, and removes the guesswork involved in assigning proper index integers to the observed charges. (MLH)

Describes the procedure and materials of a game designed for teaching alimentary systems. One set is used to teach a whole class. (GS)