Discusses traditional school demonstrations and experiments in hydrotropism. Explains that these experiments seem to "prove" hydrotropism, but yet most botanists reject hydrotropism. Teachers continue to teach the concept because it is logical and the experiments are simple. (PR)

Describes how students can make and use Hooey Machines to learn how mechanical energy can be transferred from one object to another within a system. The Hooey Machine is made using a pencil, eight thumbtacks, one pushpin, tape, scissors, graph paper, and a plastic lid. (PR)

Describes an activity for studying weeds in grades four through nine. "Wanted" posters are prepared with the scientific name of a common weed and a few identifying features. Students find the plant, give it an "alias" or common name, and then draw the "wanted" picture. Presents six wanted posters and describes expansion lessons and follow-up…

This activity book uses the whole language approach to encourage young readers and prereaders to become critical listeners and viewers by comparing different versions of familiar fairy tales ("The Three Little Pigs" and "Beauty and the Beast"). Class activities, educational games, posters, and student activity pages are…

Demonstrates how to construct rational, exponential, and sinusoidal functions that appear normal on one scale but exhibit interesting hidden behavior when viewed on another scale. By exploring these examples, students learn the importance of scale, window size, and resolution effects in computer and calculator graphing. (MAZ)

Stresses using the features of graphing calculators to teach parametric equations much earlier in the curriculum than is presently done. Examples using parametric equations to teach slopes and lines in beginning algebra, inverse functions in advanced algebra, the wrapping function, and simulations of physical phenomena are presented. (MAZ)

Presents the "mine to my home" concept (explore-mine-process-consume-recycle). Provides a large, color poster and many activities for teaching this concept. (PR)

Describes how a small group of elementary school teachers and a principal used collaboration, inservice workshops, shared leadership and planning, peer coaching, and the informal sharing of ideas and materials to establish an effective hands-on science program. (PR)

Explains how the surface of a freshly sliced potato can be used for a variety of enzyme action experiments including the influence of pH on enzyme action, the enzyme denaturation potential of boiling water, the inhibition of enzymes by heavy metals, and the effects of salt concentration on enzyme effectiveness. (PR)

Presents an overview of the 1994 National History Day project and its theme, "Geography in History: People, Places, Time." Includes a list of suggested History Day topics linked to broad historical themes. Provides a 17-item bibliography of resources for students working on History Day projects. (CFR)

Presents names, phone numbers, and addresses for obtaining space resources used in classroom instruction. (PR)

Describes several student-tested activities built around "Jurassic Park." The activities feature students engaged in role-playing scenarios, investigative research projects, journal writing and communications skills activities, cooperative learning groups, and learning experiences that make use of reading skills and mathematical knowledge. (PR)

Presents an instructional unit designed for use in a secondary-level United States history course. Provides educational objectives and instructional procedures. Includes charts, maps, photographs, and student readings. (CFR)

Describes the annual Moot Court Competition held each year in Sacramento, California and supported by the Citizenship and Law-Related Education Center. The program gives high school students the opportunity to learn about the nation's justice system using a role-playing scenario of an appellate-level court argument. (MJP)

Describes the use of a supercomputer in chemistry and physics instruction. The computer is used by high school students to create high quality, nearly 3-D graphic images of scientific phenomena. (PR)