Describes an undergraduate experiment using nmr spectroscopy to study rapid exchange reactions in solutions in which reaction rates are varied by adjusting reagent concentrations. (SL)

Describes a technique by which the density and hunting habits of owls can be inferred from their pellets. Owl pellets--usually small, cylindrical packages of undigested bone, hair, etc.--are regurgitated by a roosting bird. A series of activities based on owl pellets are provided. (CP)

Provides, from many different perspectives, rationale for planting on the school grounds. (CP)

Presents an experimental method for introducing special relativity which utilizes the distinction between Doppler effects for sound and for light. (SL)

Describes a method of recording galvanometer deflections when using a d'Arsonval galvanometer to demonstrate forced, damped simple harmonic motion. (SL)

Reviews a leadership development aerospace educators workshop held at Maxwell Air Force Base, Alabama, July 22, 1977, and an introductory/advanced aerospace workshop held at Central Washington State College. (SL)

Reports the findings of a study involving teacher assessment of practical work in secondary level physics courses taught in Northern Ireland. Assessment is made by a single standardized examination. (SL)

An experiment is described in which students in an introductory laboratory can determine all of the relevant energy flows of an ordinary household refrigerator. (Author/CP)

Described is a science field activity that studies the presence of certain aquatic insects, like stoneflies, as indicators of water quality. Equipment, materials, and methods are listed in detail, including suggestions for building certain supplies. Results of previous studies on the Yellowstone River are included. (MA)

Science is an often ignored subject in the elementary grades. This article lists and briefly discusses ten suggestions for strengthening and enriching an elementary science curriculum. Among the ways given are science fairs, museums, outdoor learning centers, filmstrips clinics, and school weather stations. (MA)

Provides a syllabus and three selected activities from "Astronomy--A Teacher's Guide" by Graham Ashworth. (CP)

Details the construction and operation of a high quality, low cost piece of apparatus to determine oxygen concentration in water. (CP)

Presented is a classroom activity designed to acquaint students with sampling techniques before going into the field. Using a one-inch quadrat, students sample a printed page and learn to collect and interpret their data. Performance objectives, preassessment, teaching strategies, postassessment, and illustrations are included. (MA)

Learning activities that introduce new twists to teaching such basic subjects as mathematics, social studies, reading comprehension, music, science, creative writing, and spelling are described. (CB)

Explains the principles of the Language Experience Approach (LEA) and discusses its application to science lessons. Provides a five-day plan for extending an LEA activity. Illustrates the LEA approach with a lesson involving a turtle. (ML)