An approach to teaching electrochemical driving force that helps students comprehend the forces that govern ion flux across biological membranes and sets the stage for more elaborate analysis of biochemical signals is presented. Background information and two sample problems and answers are included. (KR)

Describes a course designed to teach the relationship between science, agronomy, and society. Includes course and class description, course content, and evaluation of the course. (11 references) (MCO)

Two groups of adolescents (n=36) with learning difficulties in mathematics were taught problem-solving skills under two conditions: standard word problems or contextualized problems on videodisc. Both groups improved their performance, but students in the contextualized problem group did significantly better on the contextualized problem posttest…

Describes the guess-and-check method and discusses the advantages of using computers to apply the methods to solve mathematics problems. Provides two examples that use BASIC programs to illustrate the method. (MDH)

Entering a value into a calculator and repeatedly performing a function f(x) on the calculator can lead to the solution of the equation f(x)=x. Explores the outcomes of performing this iterative process on the calculator. Discusses how patterns of the resulting sequences converge, diverge, become cyclic, or display chaotic behavior. (MDH)

Ways in which the standards of problem solving, communication, reasoning, and connections can be incorporated into the elementary geometry curriculum are identified. Visualization of figures, conservation of area, shape and space, and multicultural study are discussed. (KR)

An activity in which students use manipulative materials to help solve simple algebraic equations using the operations of adding inverses, removing opposites, and sharing equally is presented. Directions, examples, the rationale, and cautions are included. (KR)

The idea that the methodologies provided by research should serve as models in developing practices in the classroom and in finding adequate solutions to students' and society's problems is discussed. The thoughtfulness of science, the scientific method, and science teaching are included. (KR)

An astrophysics course based on the constructivist approach to science teaching is described. The study of galactic structure is given as an example. Direct experiences and observations, representative-symbolic language, organized knowledge, and formal strategies are emphasized. (KR)

An integrated lesson for kindergarten that familiarizes students with the phases and the surface of the moon is provided. Activities allow students to draw comparisons between the surface of the moon and the earth. Questions to ask students, directions for the activities, and a list of needed materials are included. (KR)

Described is a programing application of the software, Mathematica, which allows students to explore the various cases involved in minimizing the sum of squares for the best fit of a regression line. Several examples are included with appropriate software commands. (JJK)

Student comments about having time in class to think and solve problems are presented. Stressed are teaching methods which allow students to familiarize themselves with the problem, think about solution processes, work through the solution process, and reflect while solving a problem. (CW)

Discussed are teaching methods that can be used in association with amusement park rides. The basic principles behind the effects of several rides are reviewed and illustrated. (CW)

Revoicing as a classroom technique is considered. Three examples illustrate the potential of the classroom discourse strategy revoicing to position students with regard to propositions and allow them to claim or reject the positions; share reformulations to credit students with teacher inferences; and scaffold and recast problem-solution…

Provides guidelines for classroom discussions of bioethical issues. Equipped with an ethical reasoning model, teachers can help to prepare students to make responsible decisions about science-related issues. (ZWH)