Presents ideas for investigating fruits and vegetables with 5- and 6-year-old children. Activities allow children to explore the characteristics and classification of fruits and vegetables. (WRM)

Details laboratory procedures that enable students to understand the concept of how differences in water potential drive the movement of water within a plant in response to transpiration. Students compare transpiration rates for upper and lower surfaces of leaves. (DDR)

Describes a project in which teachers concentrate on providing hands-on learning and work with students to build a nature center. Students participate in the planning, implementation, and evaluation phases of the project. (DDR)

Describes the use of an oven bag as a sterile chamber for culture initiation and tissue transfer. Plant tissue culture is an ideal tool for introducing students to plants, cloning, and experimental design. Includes materials, methods, discussion, and conclusion sections. (SAH)

Describes historical accounts dating back to as early as 604-562 BC of the various uses of hydroponics. Throughout the article, diagrams and simple instructions are provided to aid in classroom use of hydroponics. (ZWH)

Describes an experiment designed to teach students to accurately identify and measure changes in plant morphology and chemical composition due to environmental stresses. Contains 31 references. (DDR)

Presents photosynthesis as a dynamic demonstration requiring student participation. Depicts photosynthesis as sequential and is scripted in two acts. (DDR)

Describes a laboratory activity investigating important concepts in microbiology and ecology in which students design and carry out their own experiments and learn about microorganisms. Points out that all microorganisms are not dangerous and studies the relationship between Methylobacterium and plants. (YDS)

Describes an experiment in which students design the experiment and observe different liquids' effects on germination. Presents directions for laboratory writings. (YDS)

Introduces an elective science course on one of the silent invaders across the nation--noxious weeds. Targets public education as the main goal of the project. (YDS)

The exciting world of plants may be something of a mystery to many children, and the often-dry content of a curriculum taught indoors inhibits real understanding of many complex biological processes. Moving outdoors opens up an unexplored world and presents rich opportunities for imaginative learning. The "Life processes and living…

In this study the photoinhibition of photosystems (PS) I and II caused by exposure to high intensity light in oat ("Avena sativa," var Prevision) is measured by the emission of chlorophyll fluorescence in intact leaves adapted to darkness. The maximal quantum yield of PS II was lower in plants grown under high light intensity than in plants grown…

As the articles in this issue attest, U-shaped curves in development have stimulated a wide spectrum of research across disparate task domains and age groups and have provoked a variety of ideas about their origins and theoretical significance. In the authors' view, the ubiquity of the general pattern suggests that U-shaped curves can arise from…

Research was carried out on the ethnobotanical potentials of common herbs in Nigeria using Enugu State as a case study. A total of 200 questionnaires were administered on herb sellers in major herb markets in the state. In all, 96 different plant species were encountered in the markets. Attempts were made to write the names of the species both in…

Western China is vast, expansive, sparsely populated, and economically underdeveloped, but it plays an important role in economic and social development in China. While the west is a crucial base of power resources, it is also rich in fauna and flora resources and the major habitat for China's many rare wildlife species. Therefore, protecting its…