Article is a demonstration lesson on Archimedes' Principle for Elementary school students. (GB)

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 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)

Discusses three possible methods of thinking about the implications of the definitions of the Avogadro constant and number. Indicates that there is only one way to arrive at a simple and standard conclusion. (CC)

Presents a brief explanation of the solar system, including planets, asteroids, satellites, comets, planetary orbits, as well as, old and recent cosmogonic theories. Indicates that man is nearer a solution to the origin of the planetary system than ever before.

Discusses the use of a modified air table to conduct laboratory experiments which eschews research-oriented lab experience and concentrates on concepts learned in classroom. Includes a description of apparatus construction, sample instruction sheets, and a list of laboratory concepts with their relationships to classroom materials. (CC)

Suggests a proper sequencing of learning activities in science teaching with the textbook used after child's completion of inquiry and acquisition of big ideas.'' (CC)

By using minimal equipment it is possible to demonstrate Faraday's Law. An electronic desk calculator enables sophomore students to solve a difficult mathematical expression for the induced EMF. Polaroid pictures of the plot of induced EMF, together with the computer facility, enables students to make comparisons. (PS)

Describes new program leading to Master's degree in Ocean Engineering. Established in 1966, program is third of its kind in the U.S. (WM)

As agents of social change, engineers should take into account the interaction of technology with environment so that technological advances are not made at the expense of safe environmental conditions. Adapted from address delivered to International Conference on Engineering Education, September, 1969, Oslo, Norway. (WM)

Describes geography of the moon. A brief history of selenographic history is given and basic features including lunar seas, mountains, craters, rays, and faults are described. Lunar photographs are included. (JM)

Describes a project for preservice and inservice teachers enrolled in an elementary school science methods course. Purpose of the project is to study children's concepts of science and to develop understanding of cognitive development. Interview techniques are based on Piagetian methods. Studies are critiqued on a group basis. (JM)