Provided is an outline of laboratory activities involving a full year of student investigations of natural-resource ecology and an example of an activity, "Home Range Analysis." Objectives, background information, key vocabulary, skills, materials, procedures, extension activities, and evaluation of this three-lesson activity are discussed. (CW)

Explains the importance of introductory science courses and presents characteristics of exemplary courses. (PR)

Describes a simple and inexpensive, one-period activity to extract DNA to make the study of DNA less abstract. A microscope titration is used to determine when cells are ready for DNA extraction. (PR)

Describes an interesting field experiment examining the distribution and diversity of a single community using lichens and the animals living in them. Combining field experience and laboratory work reveals not only the biology of some unusual organisms, but also community ecology and diversity. (PR)

Presents an activity in which students investigate the formation of solid ammonium chloride aerosol particles to help students better understand the concept of acid rain. Provides activity objectives, procedures, sample data, clean-up instructions, and questions and answers to help interpret the data. (MDH)

Proposes as a unifying theme for high school biology the question of "how chromosomes determine what we are." Describes a sequence of lessons in which students learn about proteins, enzymes, and amino acids. Includes three dry laboratory exercises to demonstrate the DNA sequences for sickle cell anemia and cystic fibrosis. (MDH)

Describes the use of Vee maps in helping students understand scientific investigations. (PR)

Describes an easy and inexpensive method of preparing experimental growth media that high school students can use for plant cloning investigations. (PR)

Describes the implementation of the National Aeronautics and Space Administration SEEDS Project in a sixth-grade class in Turlock, California. Describes student activities and media coverage surrounding the project. (MDH)

Describes a unit on magnetism that utilizes hands-on activities in which students make hypotheses for discrepant behavior, discover whether a magnet attracts one object through another, measure the strength of magnets, explore levitating paper clips, and play a game dependent on magnetic attraction. (MDH)

Reports on a questionnaire completed by 73 universities. Results indicate that laboratory instruction is part of almost all introductory biology classes. The majority (62%) of these institutions offer separate biology courses for majors and nonmajors. There is renewed interest in investigative types of laboratories. Most laboratory instruction…

Describes the use of an indicator made from the pigment in red cabbage. Cabbage is grated then soaked in water. When the water is a strong red, the cabbage is strained out. The cabbage-juice indicator is then used to test for acids and bases. Includes a list of good foods to test for acidity and alkalinity. (PVD)

Explores measuring the specific heat of a metal ball. The ball is heated to a known temperature then placed in cold water. Students measure the temperature gain of the water in this investigation of the principle of Conservation of Energy. As a second task, students make a precise determination of the density of the ball. (PVD)

Describes the use of a mystery substance, Oobleck, in a graduate-level course for secondary special-education teachers that considered ways to teach science. Principles of science instruction, teaching students with diverse disabilities, instructional congruence, student assessment, and modifications are addressed. (DB)

Describes the authors' research behind the Historic Cancellation of Fact method, a solution to the information explosion crisis. Each existing paper is evaluated in the light of new papers published the day before, and any "old" paper which has suffered obsolescence is immediately pulled and republished in its entirety in SCRUB (Science Culling…