A different approach is used to develop taxonomy concepts. A traditional outline of each phylum under consideration is given to students, together with a series of questions. Students must then determine relationships within the outline by answering the questions. (Author/JN)

Suggests instructional strategies and student activities related to the study of insects during the winter. Includes possible collecting sites and classroom activities once the insects have been collected. (JN)

Describes indoor and outdoor activities using shadows to develop skills in observing, predicting, and justifying conclusions. (SK)

Although a complete oxygen meter is an expensive piece of equipment, homemade circuitry can be a suitable substitute if science teachers are aware of the limitations of the apparatus as well as of certain techniques for effective use. (PB)

Describes procedures for measuring the reverberation time in rooms which have been used for classroom demonstrations, and by nonscience students taking a course in musical acoustics. (Author/CS)

This collection of notes describes (1) an optoelectronic apparatus for classroom demonstrations of mechanical laws, (2) a more efficient method for demonstrated nuclear chain reactions using electrically energized "traps" and ping-pong balls, and (3) an inexpensive demonstration for qualitative analysis of temperature-dependent resistance. (CS)

Discusses how drama can play a vital role in the science classroom. Guidelines and criteria for the evaluation of the use of drama in science teaching are also presented. (HM)

Discusses a method to solve problems in stoichiometry which can also be applied to other problems involving relationships between constituents in a chemical reaction. Students with little prior knowledge of chemistry can successfully use the method. (Author/SK)

Describes ways in which a stationary mirror ball can be used to demonstrate X-ray diffraction in an undergraduate general chemistry course. (CS)

Provides information for performing demonstrations on the synthesis and decomposition of zinc iodide and on the preparation and properties of polybutadiene (jumping rubber). (CS)

Describes some practical exercises involving the glutamine synthetase enzyme of Beneckea Natriegens. (CS)

Presents the following three biology notes: (1) a low cost variable temperature incubator; (2) projects on the ecology of freshwater mussels (Unionidae); and (3) studies on urease. (HM)

Presents 12 chemistry notes for British secondary school teachers. Some of these notes are: (1) a simple device for testing pH-meters; (2) portable fume cupboard safety screen; and (3) Mass spectroscopy-analysis of a mass peak. (HM)

Presents six middle school science notes for British science teachers. Some of these notes are: (1) fingerprints; (2) the floating magnet; and (3) the production of electricity using a lemon. (HM)

Presents an NMR experiment for the undergraduate organic laboratory, based on the disproportionation reaction of the mixed azine of benzaldehyde and acetophenone. (CS)