Presents a collection of examples of familiar erroneous grammatical constructions in a scientific context, and provides suggestions for improved sentence structure. (WRM)

Describes the ChemKits initiative devised by private colleges in Kansas to help high school science teachers meet their needs for laboratory equipment. Discusses conclusions from three years of running the ChemKits teacher-education program. (WRM)

Describes an experiment in which students determine the density of Coke and Diet Coke, consider density as an intensive property, and compare the accuracy and precision of different types of glassware. (WRM)

Describes the physical and chemical structure of zeolites and presents a series of experiments demonstrating some of the properties of these chemicals, including investigations of the hardness of tap water and the water-softening capabilities of various laundry detergents. Contains 13 references. (WRM)

Reviews a special issue of The Journal of Research in Science Teaching dedicated to concept mapping. Describes four ways in which concept mapping can be of value in science education: (1) as a learning strategy, (2) as an instructional strategy, (3) as a tool in the instructional design process, and (4) as a means of assessing a student's…

Argues that students lack an understanding of how research is done. Proposes a science exercise that provides authentic research experience for ninth-grade students in an advanced-placement chemistry class. (CCM)

Describes a simple exercise that can be used to demonstrate the concepts of SI units, experimental design, and significant digits in a manner that holds the attention of students who already understand these concepts but is still valuable for students who are less prepared. (CCM)

Describes an activity that demonstrates catalysis of chemical reactions by ultraviolet (UV) light using one of the earliest photographic processes, the cyanotype process. (CCM)

Discusses a classroom activity to trigger student interest early in a chemistry class. Describes a take-home exercise to convince students that a basic knowledge of chemistry is relevant to a better understanding of course topics in their majors. (CCM)

Discusses an approach to the first day of general chemistry class that utilizes principles of constructivism, collaborative and cooperative groups, and student-centered learning. (CCM)

Describes how chemical safety and scientific ethics are incorporated into a sophomore seminar in chemistry. Suggests that students need to recognize potential chemical hazards, choose appropriate methods for protecting themselves, and understand the ethical guidelines that the scientific community needs in order to function. (CCM)

Argues that the concept of optical activity is vague to students because it is difficult for instructors to demonstrate the phenomenon in the classroom. Presents a demonstration that allows students to observe and manipulate the optical path of polarized light through optically inactive and active solutions. (CCM)

Uses a true-to-life story of accusations made against a college football team to illustrate ideal gas laws. Students are asked to decide whether helium-filled footballs would increase punt distances and how to determine whether a football contained air or helium. (WRM)

Presents an activity in which students observe gelatin samples treated with substances that may or may not have an enzymatic effect on the protein on the gelatin. (WRM)

Describes the construction of a conductivity meter that includes a timer and a readout display that provides semiquantitative information. The meter can be made into a hand-held or lecture hall (demonstration) version. (WRM)