Boyle's Law and basic relationships between volume and pressure of a gas at constant temperature are presented. Suggests two laboratory activities for demonstrating the effect of temperature on the volume of a gas or liquid. (CS)

Given is a rationale for using science demonstrations. The development and characteristics of successful demonstrations are presented. An illustration is given in the area of microbiology. A rating sheet is included. (CW)

Outlines an instructional approach that involves the collecting of stamps to lower student's resistance to the study of physics and raise their interest in the history of the subject. (ZWH)

Presents the Story Model which helps students to ask meaningful questions and answer them in a systematic way that shows respect for the environment. (MKR)

Describes how a real life experience was used to illustrate linear and rotational equilibrium (ZWH)

Presents 3 examples of tables that can be used with year-11 and year-12 chemistry students: (1) steps and explanations in the production of aluminum; (2) similarities and differences of electrochemical and electrolytic cells; and (3) properties and their explanations: ionic solids. (MKR)

Suggests techniques to help eliminate students' misconceptions involving Newton's Third Law. Approaches suggested include teaching physics from a historical perspective, using computer programs with simulations, rewording the law, drawing free-body diagrams, and using demonstrations and examples. (PR)

Author states environmental archaeology involves reconstructing past environmental conditions from archaeological evidence, allowing development of earlier human societies to be understood in relation to factors such as their food supplies, state of health, etc. This article illustrates links between archeological and environmental evidence, and…

The author explains that randomlike serial data of different provenance are shown to contain a hidden common pattern which is governed by a simple law--the "Law of Statistical Relaxation." A model is introduced for illustrating how to interpret this law, and some applications are considered. (PR)

Presented are seven investigations that examine circadian rhythms. Topics include attention span, body temperature, rhythms found in rodents and spiders, and possible genetic determination of circadian rhythms. Background information on plants and animals is given. (KR)

Outlines the characteristics of "friendly" science textbooks and demonstrates how these characteristics increase students' overall comprehension of reading materials. (PR)

Describes an approach that provides mathematical tips and helpful suggestions for presenting the Hardy-Weinberg equilibrium to predict allele frequencies, phenotypes, and genotypes in populations. (ASK)

Discusses the common misconception persistent in high school and college level introductory biology texts that "dark reactions" of the Calvin cycle actually occur in the dark. Explains that they are indirectly dependent on the presence of light for their activity. (ASK)

Addresses questions concerning the cognitive character of 19th century British molecular discourse. Suggests that, precisely because of its fluid character, molecular discourse produced a common universe of meanings that sustained an ongoing thought experiment regarding the intimate structure of matter and that, by so doing, initiated a process of…

The development of a simple spectro photometric method to quantitatively determine the quantity of FD&C color additives present in powdered drink mixes, are focused by the investigations. Samples containing single dyes of binary mixtures of dyes can be analyzed using this method.