Students in the intermediate grades love to talk--but not necessarily about making sense of what they are learning. How do teachers design classrooms that cultivate productive discourse? How do they get out of the way and teach children to learn? First, let's give them something to talk about. Second, teachers need to teach them how to engage in…

This column presents ideas and techniques to enhance your science teaching. In this issue the authors discuss a design project they have used with upper elementary students (grades 4-6). They note ways to engage students in thinking philosophically about technology to meet engineering design outcomes in the "Next Generation Science…

An after-school enrichment activity offered to sixth-grade students gave a group of 10 students an opportunity to explore the effects of the California drought in their community using an engaging scientific device: the UAV (unmanned aerial vehicle). Although this activity was specifically designed for a small after-school enrichment group, it…

The slime mold Physarum polycephalum provides an easily maintained classroom plant which can act like an animal. Directions are given for: acquiring the organism; activating it; observing its life cycle; and viewing protoplasmic streaming. (DH)

Presents a science activity that illustrates the need to collaborate in scientific inquiry. The example utilized describes the methods used by the Roman doctor Galen to treat epilepsy. (MDH)

Provides guidelines for simple acceleration experiments with string and attached weights as a means to stimulate the reticular activating system (RAS) of the human brain. Several methods (discrepant events, curiosity, choices, and doubt) are suggested for promoting RAS high-level thought. String drop experiments provide concrete experiences with…

Sixth graders participated in a long-term project involving archaeological processes. Activities included finding background information, site preparation, excavation, record keeping, cleaning artifacts, and classifying items. This pilot project was very successful in Arizona and will be expanded to include more grade levels and groups. (DH)

Procedures for dying and mordanting wool fibers and for preparing dyes from red onion skin, purple cabbage, pine needles, and purple lilac are presented. Information on the history of dyes and on how dyes work is included. (JN)

Sixth graders built working "robots" (or grasping bars) for remote control use during a unit on simple mechanics. Steps for making a robot are presented, including: cutting the wood, drilling and nailing, assembling the jaws, and making them work. The "jaws," used to pick up objects, illustrate principles of levers. (DH)

Nonsense botany, an easy, amusing way of learning the principle of nomenclature, involves using English words (in Latin constructions) to describe a make-believe plant; a drawing of the plant accompanies the pseudoscientific name. Suggests that students use this technique (developed by the nineteenth century British humorist Edward Lear) when…

Offers suggestions for activities that demonstrate the principles of osmosis. Explains how decalcified chicken eggs can be used to give students practice with measurement, experimental procedures, and science principles. (ML)

Suggests using squids for classroom investigations. Background information about these marine animals and a dissection activity are included. (JN)

Provides background information on honey ants. These ants are found in dry or desert regions of North America, Africa, and Australia. Also provides a list of activities using local species of ants. (JN)

Teachers may introduce students to anamorphic art (images designed to be looked at with conical mirrors or with mirrors diagonal to the image) with inexpensive cylindrical mirrors. By using polar graph paper, images can be made "correctly distorted" and will appear normal when viewed with a cylindrical mirror. (DH)