Discusses an experiment on the conservation of momentum and Q-values for elastic and inelastic collisions with frictional energy dissipation taken into account. Indicates that the apparatus is readily fabricated from easily available materials. (CC)

Describes a semester-long field trip in which 26 students of the University of Colorado studied the geology of the western United States. Only four of the participating students were geology majors. (JR)

Discusses the principles, construction, and operation of an apparatus which serves to demonstrate the non-colinearity of the angular velocity and momentum vectors as well as the inertial tensors. Applications of the apparatus to teaching of advanced undergraduate mechanics courses are recommended. (CC)

Reviews the basic theory underlying the lift and drag forces of a magnetically levitated vehicle riding over a continuous sheet guideway. Included are descriptions of the future vehicle characteristics and the students' construction of a superconducting magnetically levitated merry-go-round demonstration apparatus in a laboratory experiment. (CC)

Discusses the construction of a diffractometer table and four microwave models which are built of styrofoam balls with implanted metallic reflecting spheres and designed to simulate the structures of carbon (graphite structure), sodium chloride, tin oxide, and palladium oxide. Included are samples of Bragg patterns and computer-analysis results.…

Discusses the offering of a course in chemical and industrial hazards for junior and senior chemistry majors at City College of New York in 1972. Suggests inclusion of laboratory and industrial safety education as a formal part of chemistry or science curricula. (CC)

Summarizes characteristics of underprepared students and remedial programs undertaken at various institutions. Indicates that most of the programs are unsatisfactory, and the students' weaknesses primarily result from poor mathematics preparation and reading ability, lack of inductive and deductive reasoning, and communications deficiencies. (CC)

Briefly summarizes a number of innovative programs in environmental science that are being used at the precollege and college levels. (JR)

Discusses the use of a computer program to describe chemical reactions by the concepts of reaction coordinate and energy profile. Indicates that representation of a collision encounter by a trajectory on the energy surface leads to a precise explanation, rather than schematic, in the teaching chemical kinetics. (CC)