Discusses Heisenberg's uncertainty principle in simple terms. Presents scientific examples leading to the development of the principle and describes popular misconceptions associated with it. (SK)

Argues on the basis of Piaget's theory that self-regulated cognitive activity of the student plays a crucial role in the construction of logical reasoning strategies used in testing hypotheses. Proposes six sequences in the development of hypothesis-testing conceptions and provides alternatives. Also distinguishes three families of teaching…

Offers the opinion that the creative and imaginative dimension of chemistry can be added in chemistry instruction through the acknowledgement of ambiguity in experimentation and science history. (CS)

Reported is a study involving a modification of the mastery learning technique designed to determine the effects of general remediation on the achievement of the mole concept by 99 ninth-grade physical science students. Results of one way analysis of covariance did not indicate a significant difference in mean scores between treatments. (DS)

Describes aspects of the Understanding British Industry Project which was designed to provide information to teachers regarding the role which industry and commerce play in British society. (CS)

Discusses two main problem areas for school/industry cooperation: (1) the need to define the purpose of such cooperation; and (2) the logistical restraints of mass visits to local industries. Also discusses the development of attitudes, and the construction of interactive teaching packages. (CS)

Describes a "bridge" model that is used in aiding young people interested in science careers to make the transition from school to working life, covering roughly the ages of 13 to 19 years. (CS)

The individualized learning model, discussed in this article, uses an efficient feedback mechanism which incorporates an innovative student evaluation program and a unique system of classroom management. The design provides a model for monitoring student progress. (Author/SA)

Investigates whether placement of pictorial adjuncts before or after related textual material enhances instructional effectiveness for learners of varying ability. Junior high students (N=84) were randomly assigned to one or three treatments in which a diagram of the hydrologic cycle was inserted before, after, or omitted from the text. (CS)

Described is a resource idea developed for the teaching of oceanography to junior high students. Sand is studied to help make the study of beaches more relevant to students who may have never seen an ocean. Sand samples are brought into the classroom from various coastal cities, then analyzed and compared. (Author/DS)

This study examined (1) the predictive validity of the Differential Aptitude Tests (DAT) relative to the engineering, mathematics, and science grades and cumulative grade point averages of high school seniors in engineering; and (2) the differential validity of the eight DAT scales in comparing high and low achievers. (Autor/BW)

Describes: (1) Law of Mass Action; (2) equilibrium constant and ideal behavior; (3) general form of the equilibrium constant; (4) forward and reverse reactions; (5) factors influencing equilibrium; (6) Le Chatelier's principle; (7) effects of temperature, changing concentration, and pressure on equilibrium; and (8) catalysts and equilibrium. (JN)

Investigates the problems of teacher supply and demand, with emphasis in math and science, in Iowa's public schools. Discusses the major factors influencing teacher shortages and teacher characteristics. (Author/DS)

Determined (1) how student attitudes toward science change as a consequence of changes in learning environment across time and (2) extent to which student attitudes are associated with student characteristics and their learning environment. Indicates students enjoy science at elementary and secondary levels with no sharp dropoff in student…

Discusses two major misconceptions about reading shared by many teachers, students, and parents: reading instruction should take place in the elementary schools, and only those students having problems need help in reading. It offers suggestions for integrating the teaching of reading skills with the teaching of physics content. (SK)