Explains how a science teacher's experiences as a chimney sweep were used to provide new material for introducing and reinforcing scientific concepts. Photographs of chimney inhabitants were used as the raw data for student inquiries into the ecological processes taking place in and around chimneys. (RT)

Described are the techniques and results of using this tissue culture activity. Discusses the advantages of using such techniques in teaching alternation of generation life cycles to biology students. (CW)

Describes evaluation activities after a seven-week unit on botany and natural communities in a fifth-grade class. The six tasks designed for multiple learning styles include writing a topical essay, drawing and labeling plant parts, clinical interviews, group discussion, concept mapping, and evaluating questions. (PR)

Provides the electronic circuit schematic for the construction of a green vegetation sensor, the directions for its use, and suggestions for student projects. (JJK)

A collection of creative pupil activities in science lessons is presented, discussed, and illustrated. The activities include drawing, acting, gaming, and modeling. The relative merits of work of the types described are analyzed. (KR)

Describes using tetrazolium chloride as a chemical test for seed germination. (PR)

Discusses current biological research related to plants, including rootless plants, cellulose synthesis, plant identification in forensic science, and plant chemistry. Contains 19 references. (WRM)

Discusses and presents activities for learning about plant fossils. The first activity uses teacher-prepared "fossils" made from plaster of Paris. Students attempt to classify the plants. In the second activity, students observe actual plant fossils. (PR)

Considers the contributions of John Bartram, a self-taught botanist and farmer in Colonial America. Bartram collected and classified hundreds of North American plant species, eventually enjoying international renown as a botanist. His 102-acre farm and garden in Pennsylvania have been restored and preserved. (MJP)

Investigates whether the use of the combination of lecture, discussion, and computer-assisted instruction (CAI) significantly improved students' attitudes toward biology and their understanding of reproduction in plants and animals. Studies grade 11 Jamaican female students (n=77) from two traditional high schools in Kingston. (Contains 19…

Explains the procedure for creating a field guide for high school students. Provides field guide questions and a sample format of the guide's insect page. (YDS)

Explains how students can perform an alternative authentic DNA fingerprinting analysis. Presents restriction fragment length polymorphism (RFLP) analysis and can serve as a simulated molecular epidemiology laboratory or as a simulated forensic laboratory exercise. (DDR)

Presents a study in which the conversations of primary school groups were collected in a botanical garden and analyzed for content. The data were examined for the effects of the presence or absence of an adult in the group, age, and the sex of the pupils. (Contains 27 references.) (Author/DDR)

Describes a science activity on polyploidy targeting middle and high school students which can be used to discuss topics such as chromosomes, cells, plant growth, and functions of stomates. Integrates mathematics in data collection. (Contains 13 references.) (YDS)

Describes a tree studies program in a fourth-grade classroom. Students collected local tree seeds and seeds from supermarket fruits, researched growing conditions, and grew seeds under various conditions. Students kept journals on local trees, observing seed dispersal mechanisms and examining rings on trunk slices. Inquiry-based tree studies…