Describes an experimental system that allows students to observe pollen tubes in vitro and to investigate a variety of aspects of pollen tube-style interactions. One interaction provides an example of postmating reproductive isolation. (MDH)

Shows how fruit flies can be used in the teaching genetics laboratory to correlate the principles of heredity with the modern understanding of enzymes. (Contains 16 references.) (MDH)

Describes concrete demonstrations on the states of matter. In the first demonstration, students represent molecules; and, in the second demonstration, moth balls are heated to produce a change of state. (PR)

Describes an activity for helping students understand and use data tables. (PR)

Discusses and explains early people's fears and explanations of eclipses. Describes the lunar eclipse scheduled for November 28-29. (PR)

Describes making a magnetic pendulum similar to those seen in novelty shops. Presents an open-ended activity and a more structured activity using this pendulum. (PR)

Examined and compared the logical thinking skills and science process skills of junior high school students in North Carolina (n=3,291) and Japan (n=4,397) by grade and by gender. Results indicated that Japanese students in grades seven, eight, and nine performed significantly better than North Carolina students in both areas. (MDH)

This case study examines one enthusiastic elementary student teacher's beliefs about science and science teaching, the teacher's classroom practices, and perceived constraints to science teaching. Constraints included lack of time, facilities, and equipment; expectations by the university supervisor, the cooperating teacher, and peers; and…

Describes the Russian approach to integrated science education and discusses new ideas that Russians are working on. (PR)

Describes an award-winning bulletin board for introducing a unit on reptiles. This interactive bulletin board contains fun facts and counters common misconceptions about reptiles. Twelve true-false statements are hidden behind pull-up flaps. Four pictures ask students to identify the difference between often-confused animals. (PR)

Describes an activity that challenges students to make an object that, when released under water, does not float up or sink down. The main concept this activity investigates is the density of ordinary objects in comparison to the density of water. (PR)

Provides advice about using cooperative learning in science instruction. Advice pertains to setting up groups and strategies for group work. (PR)

Describes science activities for a field trip to the beach for sixth-grade students. Explains how students can save what they find using plaster of Paris to create a sand cast. (PR)

Describes the interactions and applications of three models of learning: Bloom's taxonomy, the Jungian or Myers-Brigg's Typology, and William Perry's model of attitude toward learning. (PR)

Describes an inexpensive and sturdy model of protein synthesis that students can make in groups or that can be used by the teacher for demonstrations. (PR)