Uses members of the Cruciferae family such as radishes (Sp. Raphanus), to describe a process termed allelopathy by which a plant uses a chemical compound that escapes into the environment to harm another plant. Tips are provided for easy use in the classroom. (ZWH)

Describes the classification, number, and origin of wildflowers in North America. Discusses the use of a poster attached to the journal that includes activities to help students develop an awareness and appreciation of the native flora of North America. Additional activities are referred to in a list of 20 additional resources. (MDH)

A naturalist and designer of public gardens relates her experiences of introducing children to plants and gardens using equipment such as binoculars, stethoscopes, notebooks, photographs, and magnifying glasses. Article provides information is given about many plants, their uses, and related child-centered activities (such as a namesake pumpkins…

Explores the ecosystem in Pacific Northwest Coastal America and investigates land management issues. Discusses the impact of canopy trees on temperature and the forest itself. Explains fungi's relationship with trees and presents activities on stream flow, wood, volcanoes, and plants for the classroom. (YDS)

Technological communities used bibliometric data on 411 plant biotechnology organizations to study the effect of field density and structure of the research and development network. Findings indicate the usefulness of bibliometric data in mapping change in technological communities and in the effects of networking on entry behavior. (PEN)

Shares an approach to tree identification that can be adapted to use with all levels from middle school through college. Stresses student involvement and cooperation in a botanical scavenger hunt. Describes the development of the treasure map and how to use the guide sheet. (DDR)

Argues that ongoing cooperation between teachers and maintenance personnel is required when planning and implementing schoolyard projects. Reviews planning, safety, and physical security considerations. (DDR)

Demonstrates how leaf slices provide an inexpensive material for illustrating several fundamental points about the biochemistry of photosynthesis and respiration. Presents experiments that illustrate the effects of photon flux density and herbicides and carbon dioxide concentration. (DDR)

Presents five plant science stories and examines the real truth behind them. (Contains 28 references.) (ASK)

Presents a quick and easy demonstration of species-area relationships. Focuses on common cynipid rose galls which can be found over much of North America. (ASK)

Presents the story of the accidental invention of the Wardian case, or terrarium, by Nathaniel Bagshaw Ward. Advocates the use of this story in teaching precollege biology as an illustration of how a chance event can lead to a major scientific advancement and as an example of the common occurrence of multiple discovery in botany. Contains 34…

Explains a way to grow fern gametophytes and describes the use of these gametophytes to enable students to grasp the concept of alternation of generations. (DDR)

Introduces teaching materials developed for field identification of plants with synoptical keys, identification tables, cards, and programs. Selects approximately 2000 seed plants and uses visibly identifiable characteristics for classification. Recommends using the methodology of identification in other areas for biological identification. (YDS)

Introduces the activity of building a biome which can be used both for lecture and assessment purposes. Lists required materials and procedures for this activity. (YDS)

Explains the process of establishing transgenic plants which is a very important tool in plant biology and modern agriculture. Produces transgenic plants with the ability to synthesize opines. (Contains 17 references.) (YDS)