Presents an activity in which students construct model hot air balloons to introduce the concepts of convection current, the principles of Charles' gas law, and three-dimensional geometric shapes. Provides construction and launching instructions. (MDH)

Describes the selection and implementation of an authentic assessment model for evaluating students' science laboratory knowledge and skills. Provides sample problems and a scoring form for the performance-based science laboratory test. (MDH)

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 three inquiry-based lessons to develop the science process skills of observation, identification, and classification. Activities use whelk eggs and snail shells as the focus of the students' inquiries. Provides a list of 19 facts about whelks and snails. (MDH)

Presents activities in which students construct simple crystal radio sets and amplifiers out of diodes, transistors, and integrated circuits. Provides conceptual background, materials needed, instructions, diagrams, and classroom applications. (MDH)

Describes the Global Thinking Project, a collaborative effort between Georgia State University and the Russian Academy of Pedagogical Sciences to develop strategies, methods, and teaching materials to help students think globally. Students are connected through the AppleLink network. Student and teacher attitudes toward the project are reported.…

Describes the history of Richard Blakemore's discovery of magnetotaxic organisms. Discusses possible reasons why the magnetic response in bacteria developed. Proposes research experiments integrating biology and physics in which students investigate problems using cultures of magnetotaxic organisms. (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)

Students experience the distinction between observable fact and scientific theory by taking a critical look at how spaghetti can be sucked up into the mouth. A demonstration shows that air is needed to suck up the spaghetti but that the scientific explanation is not as simple. (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)

Strong European roots shape the view of science history as presented in science textbooks, presenting few women and minority role models. Presents examples of scientific discoveries made by minorities. Asserts that the contributions of culturally diverse individuals and women should be part of the science curriculum. (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)

Identifies four programs meeting the criteria for being considered exemplary in biology education in grades 7 through 12 nationwide. Provides the selection criteria for program goals, curriculum, instruction, and staff. Expresses the concern that programs are not treating biology as a scientific process, nor addressing social and technological…

Describes the teacher's guide made up of 125 student activities encompassing 1 year of high school physics instruction called Physics Resources and Instructional Strategies for Motivating Students (PRISMS). The learning cycle of each activity includes three phases: exploration, concept introduction, and concept application. Provides exploration…