Presents a laboratory investigation to demonstrate that habitat structure promotes increased organism abundance and species diversity by reducing predator effects on prey abundance. Investigates the effects of goldfish (Carassius auratus) predators on Gammarus sp. (an amphipod) and Daphnia magna (a cladoceran) prey in the absence and presence of a…

Discusses communication or, the ability to record and convey information in an accurate manner, in science. Communicating scientific information requires a range of writing, drawing, and mathematical skills. Discusses various methods and presents some activities for communicating in science. (Author/NB)

Outlines some strategies used in primary schools in the Australian Capital Territory (ACT) to teach science. Teachers wanting to investigate freshwater conducted experiments and drew concepts for reuse, recycling, and conservation. Presents two case studies using these activities to show how this theme can be used to introduce and consolidate a…

Presents a creative way to teach photosynthesis. Revolves around the growth of a lily planted and stored in the classroom. Combines the concepts of particle theory, transformation, and changes of phase and mass in a holistic approach. The six-step teaching sequence is founded on the notions of challenge, variation, and drama. (Author/NB)

Describes a project in which students collect native seeds and build a greenhouse to propagate native plants in a desert laboratory. (DDR)

Describes an environmental education project that integrates science and social studies. Provides a month-by-month account of the curriculum organized by ability level. (DDR)

Describes the use of the Internet to explore the impact of environmental changes in communities of frogs and toads. Provides a guide to investigating this topic on the web. (DDR)

Describes how to make a magic crystal garden of dendritic salt crystals. Explains the theory and procedures involved. (DDR)

Describes cooperation with the Saint Louis Zoo to provide opportunities for elementary school students to learn about bones, how animals move, what they eat, and how much they grow. Uses biofacts which include bones, skulls, and other parts to make the laboratory a hands-on experience for students. (YDS)

Describes a science activity that promotes science process skills while investigating the properties of packing peanuts. (YDS)

Discusses the potential contribution of GPS and related Geographic Information Systems (GIS) technology to education. Provides resources for teachers to plan a lesson on exploring with the help of a GPS device in order to increase students' awareness of their surroundings and broaden understanding of their place in the world. (KHR)

Describes a cut-out 3-D DNA model, which can be used to teach about DNA structure. (YDS)

Examines the nature of an ideal K-12 environmental science curriculum. Evaluates major biology textbooks with regard to ecology readings and laboratory activities in each text. (YDS)

Describes an activity integrating science and social studies using an inquiry-based approach. Focuses on the historical use of natural resources, mining, water, and conservation. (YDS)

Describes the effectiveness of cooperative learning on discipline problems, interdependence between students, and teacher-student interactions. Explains how to group students and introduces a laboratory activity on covalent and ionic bonds. (YDS)