Describes a simple and inexpensive, one-period activity to extract DNA to make the study of DNA less abstract. A microscope titration is used to determine when cells are ready for DNA extraction. (PR)

Describes the structure, activities, responsibilities, and practices of animal care and use committees established to review classroom activities and student research using animals. Provides six hypothetical situations with suggested solutions to test a committee's decision-making ability. Includes a proposed activity form for teachers. (MDH)

Discusses progress in science education by comparing predictions for science education made in 1966 with present conditions. Presents six suggestions to speed progress. Suggestions involve increased resources and equipment, program evaluation, removing obstacles from teaching, improved curriculum; and involving policymakers. (MDH)

Describes activities using worms for instruction in science and language arts. (PR)

Describes a field trip to Costa Rica by college students and an instructor in a tropical ecology course. (PR)

Describes an interesting field experiment examining the distribution and diversity of a single community using lichens and the animals living in them. Combining field experience and laboratory work reveals not only the biology of some unusual organisms, but also community ecology and diversity. (PR)

Proposes a science competition that stimulates student thinking and creativity in which groups of 4 students solve as many problems as possible in 30 minutes. Problems require students to make tools using only the materials provided. Provides materials in a sample tool kit, competition rules, and sample problems. (MDH)

Presents an activity in which students investigate the formation of solid ammonium chloride aerosol particles to help students better understand the concept of acid rain. Provides activity objectives, procedures, sample data, clean-up instructions, and questions and answers to help interpret the data. (MDH)

Addresses the need to provide bilingual, Hispanic American students with equal opportunities to learn and excel in science. Discusses the context and content of science education, suggests approaches for bilingual science teaching, and proposes potential solutions to the problems. (MDH)

Argues that student field trips should provide students with learning experiences rather than entertainment. Gives examples of science demonstrations that engage the student in the scientific process using hands-on experiences. (MDH)

Presents background information, science activities, and a color poster on the element chlorine. (PR)

Describes interdisciplinary activities for teaching students accurate information about dinosaurs. A list of 20 resources is provided. (PR)

Describes ScienceFest, a program that teams up students and teachers in an effort to create and perform original science-related plays. (PR)

Discusses four elements of cooperative learning in science classrooms: cooperative task structures; cooperative incentive structures; individual accountability; and heterogeneous grouping. Presents and describes seven cooperative learning methods. (MDH)

Presents a chromosome map for 19 known chromosomes in human genetics. Describes the characteristics attributed to the genetic codes for each of the chromosomes and discusses the teaching applications of the chromosome map. (MDH)