Recommends that teachers make use of the motivation that many young people devote to hobbies. Gives examples of this approach including the study of force, speed, work, power and various electrical concepts with model trains; acceleration and velocity with rocketry; focal length, magnification, field of view with astronomy and photography. (GS)

Describes the construction of a calorimeter to be used in an experiment which consists of measuring the rate at which ground level solar radiation raises the temperature of the metal in the calorimeter. (GS)

Presents a quiz for evaluating student understanding of wave interference utilizing two prong tuning forks. (GS)

Reports on course revisions made on the basis of input from discussions with chemistry teachers and pupils, a questionnaire administered to chemistry teachers in 200 schools, and details of the performance of candidates on the Nuffield 0-Level examination. Revised materials include materials for the pupil, for the teacher, and the exam. (GS)

This investigation involved a sample of 857 students drawn from college freshmen taking beginning biology during one quarter at Iowa State University. Students were selected on the basis of five factors. The Minnesota Scholastic Aptitutde Test (MSAT) and the Mathematics Placement Test (MATH) raw scores were used as covariants; final grade in the…

Presents a review of BIOLOGY: A SEARCH FOR ORDER IN COMPLEXITY, a textbook designed for high school students and produced under the sponsorship of the Creation Research Society. (PB)

Describes the rationale for, development of, and activities of the Renaissance Educational Consortium Ensuring Individualized Progress in Technology and Science (RECEIPTS). The effort is designed to build a consortium of community resources with a focus on science and technology in order to combat the problems of low academic motivation and…

Describes an iron-thionine photogalvanic cell designed, constructed and tested by a secondary school student. (PB)

Describes a secondary project in which students must organize an expedition to settle the people of the Earth on a new planet. (MLH)

Describes the use of a puzzle to reinforce knowledge of how things grow and outlines the use of the house cricket as an alternative to the locust or cockroach in school biology. (Author/GS)

Describes a method for the determination of the velocity of sound using a dual oscilloscope on which is displayed the sinusoidal input into a loudspeaker and the signal picked up by a microphone. (GS)

Describes the magnetic field of Helmholtz coils qualitatively and then provides the basis for a quantitative expression. Since the mathematical calculations are very involved, a computer program for solving the mathematical expression is presented and explained. (GS)

Describes a demonstration which illustrates the diffusion of gases across a membrane. (GS)

Presents a flowchart that is used in the elementary qualitative analysis of a single salt. (GS)