Presents an experiment on collecting data while measuring the dissolved-oxygen levels in Thames River tap water straight from the water mains and dissolved-oxygen levels in rainwater containing Hornwort water weed over 24 hours. (Author/ASK)

Presents an experiment on mouse behavior in which students learn to observe, pay attention to details, record field notes, and ask questions about their observations. Uses a white mouse to eliminate the risk of disease that a wild rodent might carry. Lists materials, set up, and procedure. (YDS)

Describes an experiment that uses the cobra lily (Darlingtonia californica) and fruit flies (Drosophila virilis) to investigate predator-prey relationships in a classroom laboratory. Suggestions for classroom extension of this experimental system are provided. (ZWH)

Describes historical accounts dating back to as early as 604-562 BC of the various uses of hydroponics. Throughout the article, diagrams and simple instructions are provided to aid in classroom use of hydroponics. (ZWH)

Describes changes initiated in the Level-Three laboratory course of the chemical engineering curriculum at the University of Adelaide that were useful in fostering higher-level skills and reducing the reliance on reports handed down from previous years. Highlights report writing and data analysis workshops and the laboratory project design…

Describes a format for experiments where students not only conduct their own experiments but also become part of a model scientific community by writing research proposals, applying for grants, submitting their work to colleagues for scrutiny, participating in a symposium to present their findings, and creating a scientific journal to publish…

Discusses how experiments can offer students different points of view on the mathematical concepts presented in class and bring these concepts to life. Presents an experiment that demonstrates the interaction between mathematics and fluid dynamics. (Author/ASK)

Describes the experiences of students and teachers involved in space shuttle experiments. Aims to spark student interest in the space program and careers in science. (ASK)

A study examined the relationship between the creative thinking of 114 13 to 14-year-old females and scientific problem-solving ability. The students did well in the "preliminary trialing" stage and were more proficient in "interpreting" and "performing" process skills. The other three components, "communication,""planning," and "reflecting,"…

Presents an activity in which the amount of solar ultraviolet radiation in tree shade is measured at different times of the day and compared with changes in illumination levels and temperature. (Author/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)

Uses a cross section to enhance three-dimensional knowledge of the anatomy of a canine head. Involves (n=124) veterinary students dissecting the head and experimental groups also identifying structures on a cross section of the head. Reports a positive impact of this experience on participant students. (Contains 52 references.) (Author/YDS)

Describes the results of a study on the similarities and differences in laboratory tasks used in science education at upper secondary school and university level in the three main science subjects in seven European countries. Some differences are noted between the science subjects and educational levels, but the dominant impression of the analysis…

The expression of genes in cells of various tissue types varies considerably and is correlated with the function of a particular organ. The pattern of gene expression changes in diseased tissues, in response to therapy or infection and exposure to environmental mutagens, chemicals, ultraviolet light, and ionizing radiation. To better understand…

The work done in a chemistry laboratory is compared to cooking, as both processes use books for reference. It is felt that cooking and chemistry are complex processes and are creative endeavors that require skills beyond those developed by merely following the directions.