Explains how the tobacco mosaic virus can be used to study virology. Presents facts about the virus, procedures to handle the virus in the laboratory, and four laboratory exercises involving the viruses' survival under inactivating conditions, dilution end point, filterability, and microscopy. (MDH)

Focuses on the moral arguments for and against the controversial topic of voluntary active euthanasia. Discusses the question of legalization and decriminalization of the practice. Provides a student worksheet with questions to stimulate discussion on the issue. (MDH)

Provides a student worksheet and set-up instructions for a science experiment to demonstrate the concept of density. Students are asked to explain the phenomenon in which a liquid of lower density placed in the bottom of two vertical flasks flows up to replace the liquid of higher density in the upper flask. (MDH)

The Image Processing Technology Project explores the possibility of using digital image processing in mathematics and science education. Describes the origin of the project and reports the results of a 4-week teacher workshop that trained over 80 teachers in the techniques and technology of image processing. (MDH)

Describes three programs funded by the Toyota Appreciation Program for Excellence to Science Teachers Reaching Youth (TAPESTRY) program: (1) High School Hawk Watch promotes wildlife awareness student research; (2) Science without Bounds makes science accessible to at-risk and minority students; and (3) Kansas Environmental Monitoring Network…

Describes a study to assess the effectiveness of an Awareness for Instituting Self Help program that screens and informs at-risk family clusters about heart disease. High school seniors attended a lecture, filled out family history tree questionnaires, took blood pressure and cholesterol tests, and at-risk students followed a prescribed lifestyle…

Presents an activity in which students model the processes of meiosis, fertilization, development, and birth using model creatures called reebops. Students breed reebops to analyze chromosome combinations. Makes recommendations for activity utilization and identifies the strengths of the activity. (MDH)

Presents a method to teach the concept of a mole that demonstrates the logic of empirical science using the concept of equivalent mass. (MDH)

The MOONBASE AMERICA project involved teachers and 96 secondary school students who participated in the project by helping to build MOONBASE, taking a space science course, creating a communications network, and completing a 7-day simulation in the MOONBASE structure. Teacher and student outcomes were evaluated. (MDH)

Proposes that science students keep thinking journals of their reading of their science textbooks as a method of increasing students' critical thinking skills. Discusses strategies to initiate the practice, effective use of time, sample student entries, and the use of class discussions to process the writing. (MDH)

Biotechnology has arrived in the supermarket in the form of genetically engineered enzymes. Presents an activity in which students explore the presence of protease enzymes in laundry detergents. (MDH)

Knapping is a toolmaking technique used by early humans and replicated by research archaeologists. Describes knapping techniques and provides examples of how they are presently being used in North America. (MDH)

Suggests the use of guest speakers in the science classroom to improve student learning and community-school relations. Shares strategies to effectively utilize speakers, provides a model letter of invitation to the speakers, and identifies exemplary speaker subjects and highlights. (MDH)

Suggests that an event-based science curriculum can provide the framework for deciding what to retain in an overloaded science curriculum. Provides examples of current events and the science concepts explored related to the event. (MDH)

Describes an activity in which students examine hypothetical exposure to toxins by being showered by different colored pieces of confetti over several visits to exposure sites. Students record quantities of confetti that stick to packing tape. Colors correspond to different toxins posing different health problems. Students process their findings…