Suggests that teachers should consider which questions to ask as a part of instructional preparation. To ensure that diversity and critical thinking are involved, a teacher should use a taxonomy for a template when writing questions. Presents and discusses Bloom's taxonomy, Gagne's levels of learning, and a taxonomy for general science process…

An exercise that gives students a chance to use the equations of state for both an ideal gas and for an adiabatic process in determining the points at which heat flow reverses direction and at which the working substance reaches its maximum temperature is demonstrated. (KR)

Described are how students (n=2,000) reduce the complexity of multivariable problems. Tendencies toward "functional reduction" in common reasoning are shown to range from a simple reduction in the number of variables considered, to a more elaborate procedure where all variables are taken into account, but in a simplified way involving…

Teachers are being asked to provide students with activities that are relevant, interrelated, and challenging. This article describes an activity, Zoo Investigation Cards, that place students in an investigative problem-solving situation and allows them to observe living organisms in the complex system of their natural habitat. (ZWH)

A method for demonstrating eutrophication that can be used as a simple illustration of the phenomenon or as a basis for problem-solving activities is presented. A sample worksheet with procedures for this activity and discussion questions is included. (Author/KR)

The data from measurements of the density of tungsten, steel, aluminum, and PVC spheres are used to extrapolate the infinite density of something such as a neutron star. An apparatus that allows for precision measurements is described. A discussion on error analysis is appended. (KR)

An activity in which students use a rubber band and flexible straws to pull a dynamics cart so that the cart has a consistent angle and, therefore, a consistent horizontal component of force is described. A copy of the handout for the activity is included. (KR)

Situations describing Einstein's Equivalence Principle phrased in prerelativistic Newtonian concepts are presented. (KR)

The simple physics behind the mechanism of the toy are explained. Experimental and mathematical steps are given that help in understanding the motion of the doll-pair. The geometry of the setup is described. (KR)

An attempt to clarify the teaching of some of the concepts of thermodynamics through the observation of an experiment with an ordinary refrigeration system is presented. The cycle of operation in the refrigeration system and the individual processes in the cycle are described. (KR)

A technique that uses a three-meter Foucault pendulum and a laser to measure latitude is presented. A 40-meter Foucault pendulum located in Finland and the ways in which it is used are described. The technical details and the plans for a continuously driven laser pendulum are discussed. (KR)

Investigated the extent to which differences in problem-solving performance of stronger and weaker novices in physics arise from differences in amount of domain knowledge, in how domain knowledge is organized, and in the strategic application of domain knowledge. Differences were observed in how 10 university physics students solved easy and…

Argues that insights from scholarship in the sociology of science can provide a powerful basis for making science education more authentic and inclusive. Describes how adopting sociological ideas can provide unique opportunities for students. Contains 46 references. (DDR)

Explains a taxonomy of basic skills of science practicals that is used in the assessment of secondary science students. Details the assessment scheme which involves the evaluation of students through laboratory practical examinations, observational assessment, and written records of academic sessions. (DDR)

Presents evidence indicating that spontaneously generated analogies can play a significant role in expert problem solving. Focuses on an evaluation strategy known as bridging that has been observed in solutions to both science and mathematics problems. Contains 23 references. (DDR)