Reports some of the more significant generalized findings that have emerged from an evaluation of the Nuffield O-Level biology course materials and their use in secondary schools. (JR)

Presents some materials for use in demonstration and experimentation of corrosion processes, including corrosion stimulation and inhibition. Indicates that basic concepts of electrochemistry, crystal structure, and kinetics can be extended to practical chemistry through corrosion explanation. (CC)

Discusses some important aspects of bioinorganic chemistry, including interactions of organisms with metallic and nonmetallic elements and compounds. Indicates that many environmental problems are created by human exploitation of nature and technologies if studied from a bioinorganic chemical viewpoint. (CC)

Mathematically shows that in principle a spaceship could travel eight light years in ten earth years, with the passengers arriving 4.6 years older than when they left earth and having experienced an acceleration induced effective gravity of one g for the entire trip. (MLH)

Describes a kite day at an elementary school which incorporated principles of flight, the history, art and craftsmanship of kite making and flying and provided a fun multidisciplinary approach to a student-oriented activity. (BR)

Advocates the creation of swimming pool oscillations as part of a general investigation of mechanical oscillations. Presents the equations, procedure for deriving the slosh modes, and methods of period estimation for exciting swimming pool oscillations. (GS)

Presents illustrations of numerous optical illusions which can be used in the classroom to amuse and to stimulate discussion. (MLH)