Describes how students use paper-strip molecules in hands-on activities to show the synthesis of larger organic molecules from smaller molecules. Focuses initially on condensation molecules involving the functional groups in alcohol and carboxylic acids. (DDR)

Describes the Agricultural Research Service Science Education Collaborative (ARSC), a project aimed at making the U.S. Department of Agriculture's research labs more accessible to the educational community and encouraging students to consider careers in science. Presents a case study of a teacher in the project and discusses the impacts of the…

Uses base-year data from a nationally representative database (NELS:88) to identify important explanatory factors for gender differences in science performance. Documents a large advantage for boys on the subtest of physical science and a modest advantage for girls in life science. Concludes that laboratory experiences are beneficial for girls'…

Three principles that guide documentation and assessment of children's early science understanding are: collect a variety of forms of evidence, collect evidence over a period of time, and collect evidence on the understanding of groups of children as well as individuals. Information and insights gained from this process help teachers plan future…

Describes a problem-based unit in which students are charged with the responsibility of discovering what killed the menhaden fish in a local river. Involves the teacher coaching students through the problem and directing them toward resources and lines of inquiry. Enables students to gain an understanding of their local environment and the…

Describes a unit for the first grade that takes advantage of the fall seasonal changes to explore, be creative, and learn. Ties all the subject areas together through a look at leaves and trees. A list of resources is included. (JRH)

Describes a study that examined the relationships in achievement between members of dyads who were paired according to epistemological maturity. Each dyad engaged in a photosynthesis simulation exercise. Also examines the relationship between individual students' epistemological maturity and their understanding of photosynthesis. Contains 24…

Describes the organization, design, and implementation of a two-week thematic unit for sixth-grade students, which was designed to stimulate critical and creative thinking about environmental issues through integrated reading, writing, listening, and speaking in the context of their reading-language arts, social studies, science, and mathematics…

Described are awareness activities that deal with human population growth, resources, and the environment. Activities include simulations, mathematical exercises, and discussions of the topic. Specific examples of what individuals can do to help are listed. (KR)

An activity called class books is described. The activity emphasizes using cooperative learning and integrating many subjects in the same activity. (KR)

Presented is background material on Galileo and his views on astronomy, religion, and Copernicus. The history of theory development related to the science of astronomy and a review of Galileo's writings are included. (KR)

Included are 30 science activities that include computer monitoring, fieldwork, enzyme activity, pH, drugs, calorimeters, Raoult's Law, food content, solubility, electrochemistry, titration, physical properties of materials, gel filtration, energy, concepts in physics, and electricity. (KR)

Background information, techniques used, and details of the issues involved in the controversial issue of fetal cell transplantation are discussed. Questions for use in class discussion are provided. Suggestions for beginning a discussion are provided with accompanying questions. (CW)

Discussed are experiments that may be done using a microcomputer to analyze scattering data. Apparatus assembly, procedures, and results for this activity are presented. (CW)

Four microcomputer applications are presented including: "Computer Simulated Process of 'Lead Optimization': A Student-Interactive Program,""A PROLOG Program for the Generation of Molecular Formulas,""Determination of Inflection Points from Experimental Data," and "LAOCOON PC: NMR Simulation on a Personal Computer." Software, availability,…