Describes an undergraduate atomic absorption experiment in which the iron and manganese concentrations in dry cat food are determined. (MLH)

Describes an organic chemistry experiment that illustrates dimerization, gas chromatography analysis and separation, and the thermodynamic basis for Markovnikov's rule. (MLH)

After receiving creativity instruction in how to approach laboratory problems, a group of college chemistry students made significant improvements in both laboratory technique and creativity as shown on an instrument designed for this study. (MLH)

Suggests the use of a colorimeter in which heat produced is related to the amperage and voltage measured. In relating the quantities, a definition for voltage can be obtained. (CP)

Describes a technique for making fairly good quality ocular micrometers at low cost for measuring microscopic specimen size in biology courses. (LS)

Provides a solution to the Blackwood pendulum experiment by the use of conservation of linear momentum and conservation of energy of translational motion. (CP)

Describes the operation and educational benefits of the use of a closed circuit television system in the demonstration of a hologram. (CP)

Describes a variety of classroom aids and indicates the sources. Included are storage facilities, sound experiments, stop watch, ultraviolet lamp, calculators, animal cages, and others. (RH)

Descriptions and pictures of apparatus for use in teaching measurement are accompanied by descriptions of typical uses of the materials. A list of names and addresses of suppliers is included. (SD)

Games and laboratory experiences which can be used to help build basic skills are described. (SD)

Synchronized slide-tape units were developed on topics related to polynomials and exponents. Thirteen students used the modules produced; examination and attitudinal data on these subjects are presented. (SD)