Describes a spreadsheet computer program which can be used with an Apple Macintosh computer to perform a multitude of calculations. Discusses two types of calculations taught in general chemistry. Demonstrates how to use the spreadsheet to calculate mass percent and the formula of a compound. (TW)

Describes the procedures used to demonstrate transpiration with the common sunflower. Discusses the results expected from such an activity. Provided is a sample data sheet. (CW)

Presented is a sample hybridoma assay which can be used in a research or classroom laboratory setting for instructional purposes. Described are experimental methods, materials, and observations made during this activity. (CW)

Recommends determining molecular weights of liquids by use of a thermocouple. Utilizing a mathematical gas equation, the molecular weight can be determined from the measurement of the vapor temperature upon complete evaporation. Lists benefits as reduced time and cost, and improved safety factors. (ML)

Reports on the session at the New England Association of Chemistry Teachers meeting on chemistry laboratories in March 1987. Speakers included Leonard K. Nash and Audrey Champagne on values and goals; Howard Ende on regulation; Stanley Smith and Jerry Bell on the uses of computers; and Miles Pickering on the human dimension. (CW)

Explains gyroscopic motions to college freshman or high school seniors who have learned about centripetal acceleration and the transformations of a couple. Contains several figures showing the direction of forces and motion. (YP)

Reports the results of a radioactivity survey in England. Discusses the aim of the survey, experimental procedures, analysis, and results. Shows several diagrams, graphs, and tables. (YP)

Demonstrates several objects rolling down a slope to explain the energy transition among potential energy, translational kinetic energy, and rotational kinetic energy. Contains a problem from Galileo's rolling ball experiment. (YP)

Introduced are 20 places for field trips throughout the United States. Included are the location, explanation, famous things, and references for each place. (YP)

Explains miniprojects in high school science courses. Shows the project idea table and five examples with explanations. Discusses the experience and some positive results for students. (YP)

Described are the objectives, schedule and evaluation of an institute. Listed are demonstrations performed illustrating physical properties and physical change, energy changes, and chemical equilibrium. Discussed are the advantages of using demonstrations in teaching precollege chemistry. (CW)

Describes a laboratory experiment designed for use in a freshman chemistry course. Considers the use of a set of known "training reactions" with a "training set" of solutions. (CW)

Suggests some of the basics and reasons for teaching balance. Explains how the concept of a cantilever can be used. Describes 25 activities for observing, testing and learning about balance. (CW)

Discusses the importance of laboratory experiments in which students were given a few guidelines and small groups had to design the experiments. Describes the old and new orders of laboratory projects and the effects of change. (CW)

Describes a two-day field trip, along with follow-up classroom activities and experiments which relate to water resources and water quality. Discusses how trips to a lake and water treatment facilities can enhance appreciation of water. (TW)