A hands-on simulation on spider web construction is described. Students recreate the mysteries of web construction by creating a yarn web with a pentagonal frame, 12 spokes, and 12 spiral loops. Contains instructions to the teacher for constructing the web board. Provides a procedure for the students to follow. (PR)

Presents a class activity "Microscopic Mission" where students make an imaginary journey through a living cell searching for defective DNA responsible for cancer. Nine aspects of the adventure are described. Students try to determine from the description where they are in the cell. This activity can be used for review or evaluation. (PR)

Describes ideas for applying research from space programs to life science instruction including plants in space, exercise and diet on space flights, environmental advantages from space exploration, and the effects of microgravity on health. Discusses space spinoffs used in medicine including digital imaging processing and the Ingestible Thermal…

Provides details of a middle school science program that involves students in real fieldwork on a topic of their choice. Focuses on student research in estuary and seashore ecosystems. Includes proposal format and scoring rubric. (DDR)

Describes an approach to teaching the scientific method where an outbreak of cholera within the school is simulated. Students act like epidemiologists in an attempt to track down the source of the contamination. (PR)