Addresses the need to present beginning chemistry students with a variety of experiences dealing with chemical reactions to develop the individual student's concept of these processes. Presents information and experiments dealing with the heat effect of chemical reactions. Includes a discussion on exothermic and endothermic processes in laboratory…

Describes modifications and procedures needed for parasitic lampreys to be kept in a closed system. Presents information dealing with obtaining the organisms, tank modifications, temperature, feeding, disease prevention, and animal welfare. A discussion is included. (RT)

Discussed is the integration of microcomputers into the science laboratory curriculum. The approach provides an exposure to important aspects of computer technology while preserving concrete experiences provided by hands-on laboratories. (CW)

Describes a program in which six experiments in chemistry were used in an elementary school science program. Discusses the problems encountered in initiating the program, and some of the ways the problems were solved. Lists the six experiments, along with the reaction or process being studied, and the application of each. (TW)

Describes a spectrophotometric titration experiment which uses a manual titration spectrophotometer and manually operated buret, rather than special instrumentation. Identifies the equipment, materials, and procedures needed for the completion of the experiment. Recommends the use of this experiment in introductory quantitative analysis…

A significant alternative to the traditional text-based approach to elementary science has been represented by the Science Curriculum Improvement Study (SCIS). Although the literature documents the process of the investigative approach, greater utilization of available programs and support from teachers are not evidenced. This investigation was…