Describes the objectives and content of a two-semester course in unified science for college students who are non-science majors. Student opinions regarding the course were assessed. A text, a set of self-instructional laboratories, and remedial units are being developed. Bibliography. (LC)

Presents the procedures, results, and conclusions of a study designed to compare the achievement of Jordanian and American pupils in grades 3-6. (LC)

Bimonthly Supplement to Ind Arts Vocat Educ; v58 n9 Nov 1969

Activities are provided for calculating speeds of celestial bodies. These focus on how fast earth rotates on its axis, how fast planets travel around the sun, and how fast the solar system is traveling with the Milky Way. (JN)

Because students were not retaining several key chemistry concepts, a series of problems, called nightmares (for first-year students) and Igors (for second-year chemistry students), was devised so that the concepts would be used repeatedly. Two examples each of nightmares and Igors are provided. (JN)

Results of a study investigating the nature of secondary school pupils' difficulties in understanding the concept of water potential are presented. Provides examples of common misconceptions. (CS)

Describes results of a study investigating the nature of Nigerian secondary school pupils' (N=120) difficulties in understanding the biological concepts of growth, reproduction, and transport mechanisms within living organisms. Identifies examples of common misconceptions. (CS)

Presents a simple introduction to the fundamental physical ideas involved in the breaking of local gauge symmetry. The purpose of this article is to show how these ideas can be understood independently of any particular application. (Author/HM)

This article is a brief survey of alchemy since the chemical revolution. It shows that the reasonable expectation that alchemy could not survive the new chemistry is wrong, through a description of the work and beliefs of several prominent alchemists. (Author/DS)

Discusses some physical principals that can be used to understand the proper ties of Portland cement and concrete. (HM)

Reports findings of a study using an "interview about instances" technique for investigating students' concept understanding in science. Trial interviews (N=50) involving students aged 7-18 years were conducted in relation to the concepts "work" and "electric current." (CS)