Describes a Science Open House for adults and children given by the Vassar College Laboratory Nursery School, emphasizing the importance of parent-teacher cooperative planning and the influence of Rachel Carson's viewpoints. Learning experiences were designed to investigate nature and sensory exploration, physical science, and mathematics. (SDH)

Twelve science activities involving the common paper food bag and the small plastic food bag are described. (DT)

Describes the application of a computer program designed to produce a formula determination simultaneously accounting for both elemental composition and probable isotopic species for a measured ion mass. (SLH)

Describes an experiment which can be used to test for the use of accelerants in the origin of a fire. Involves distillation and gas liquid chromatography to identify the accelerants, thus combining two experiments ordinarily included in the beginning organic laboratory. (SLH)

Describes procedures for collecting and using cryptozoic invertebrates in introductory biology classes to develop interest in invertebrate ecology, behavior, physiology, morphology, and taxonomy. (PEB)

In the activity described, elementary school children each adopt a tree and make monthly observations which are recorded in their log books. (JR)

Describes the use of student projects within a traditional biology laboratory class to incorporate openness, inquiry techniques, and student choice into course teaching. Included is a list of sample investigations. (CC)

Discusses an experiment on determination of vegetative radioactivity resulting from nuclear tests. Included is a detailed description of experimental procedures. (CC)