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Haldeman, Janice H.; Ellis, Jane P. – American Biology Teacher, 1988
Presents techniques used for disinfestation of plant material, preparation of equipment and media, and laboratory procedures for tissue culture using cauliflower. Details methods for preparing solutions and plant propagation by cloning. (CW)
Descriptors: Biological Sciences, Botany, College Science, Higher Education

Celdran, R.; Gonzalo, P. – Journal of Chemical Education, 1988
Considers three common cases of localized corrosion of metals: pitting, crevice, and stress corrosion. Provides experimental methods for studying all three methods. Includes a discussion of expected results. (ML)
Descriptors: Chemical Reactions, Chemistry, College Science, High Schools

Graham, Richard C.; Robertson, John K. – Journal of Chemical Education, 1988
Describes an experimental procedure for determining trihalomethanes (THMs) in liquids by gas chromatography. Provides recommendations for reactants and supplies to obtain acceptable results. Discusses the analysis of water from various sources: pools, lakes, and drinking water; compares these to three cola drinks. (ML)
Descriptors: Chemical Analysis, Chemistry, Chromatography, College Science

Scharff, Catherine E. – Science and Children, 1989
The harmful effects of smoking tobacco are discussed. Instructions, lists of materials, and discussion questions for three activities to investigate these effects are provided. A glossary of tobacco-use terms is given. (CW)
Descriptors: Elementary School Science, Elementary Secondary Education, Health Education, Intermediate Grades

Doran, Rodney L.; And Others – Journal of Research in Science Teaching, 1993
Tests in each science area were developed around six laboratory tasks. Students had to plan an investigation, collect and organize data, and formulate conclusions based on calculations and graphs. Over 1,000 students from 32 Ohio schools formed the sample for this study. Data are presented by skill and by task. An analysis for gender and school…
Descriptors: Alternative Assessment, Educational Research, High Schools, Performance Based Assessment

Brownstein, Erica M.; And Others – Science Activities, 1994
With thousands of activities available, how does a teacher select activities appropriate for the classroom? Describes the guidelines of the "Science Activity Filter," which provide a useful protocol for evaluating science activities for their value in the classroom, allowing the teacher to use resources effectively, minimize discipline and safety…
Descriptors: Elementary Secondary Education, High Schools, Instructional Effectiveness, Instructional Material Evaluation

Kruglak, Haym – Physics Teacher, 1992
Outlines 39 physics demonstrations that utilize simple objects such as coffee and soda cans to illustrate scientific concepts. (12 references) (MDH)
Descriptors: Demonstrations (Educational), Density (Matter), Electricity, Energy

Ronen, Miky; Lipman, Aharon – Physics Teacher, 1991
Proposes the V-Scope as a teaching aid to measure, analyze, and display three-dimensional multibody motion. Describes experiment setup considerations, how measurements are calculated, graphic representation capabilities, and modes of operation of this microcomputer-based system. (MDH)
Descriptors: Computer Assisted Instruction, Courseware, High Schools, Instructional Materials

Stensvold, Mark S.; Wilson, John T. – School Science and Mathematics, 1993
Proposes methods by which laboratory practical exams may be structured to assess outcomes from laboratory instruction. Presents eight general considerations for writing and using practical exams. Describes four example laboratory exams involving a box camera, circuit boxes, floating objects, and light. (MDH)
Descriptors: Evaluation Methods, High Schools, Higher Education, Knowledge Level

Rogis, Jeanne A. – Science Scope, 1991
Presents a class activity in which students use trigonometry to calculate the height attained by a water rocket. Provides a lesson plan that includes a list of materials needed, procedures to carry out the experiment, suggestions to extend the activity, and a reproducible worksheet for the students to register their calculations. (MDH)
Descriptors: Class Activities, Computation, Integrated Activities, Junior High Schools

Schlenker, Richard M.; And Others – Science Activities, 1993
Uses computers to help students identify variables controlling pendulum period. A program written in BASIC for the Apple computer is provided. The activities are useful for developing science skills, mathematics skills, and computer skills. (PR)
Descriptors: Computer Assisted Instruction, Computer Uses in Education, High Schools, Learning Activities

Hepfer, Carol Ely; And Others – American Biology Teacher, 1993
Provides background information on DNA fingerprinting, and describes exercises for introducing general biology students at the high school or college level to the methodology and applications of DNA fingerprinting. (PR)
Descriptors: Biotechnology, College Science, DNA, Genetics

Hershey, David R. – American Biology Teacher, 1993
Describes how lectures, laboratories, and role playing can be used to introduce students to the importance of water quality of water used for plant growth. (PR)
Descriptors: College Science, High Schools, Higher Education, Learning Activities

Bull, Linda A. – Science Scope, 1993
Describes having students write lab reports that concentrate more on writing and independent thought. Students take the role of scientists writing about their findings for publication. The teacher acts as a journal editor, reading the reports and either accepting them for publication or suggesting ways for improvement. (PR)
Descriptors: Junior High Schools, Learning Activities, Middle Schools, Research Reports

Keller, J. David – Science Activities, 1993
Presents a problem-solving activity in which students determine the effects on the water level in a pool when rocks are removed from a boat floating in the pool and placed into the water. Students discuss the problem, design an experiment to test solutions, conduct the experiment, and draw conclusions. (MDH)
Descriptors: Debate, Density (Matter), Problem Solving, Science Activities