Presents six problems from an alternative approach to homework traditionally given to follow-up lectures. Stresses the advantage of longer term exercises which allow for creativity and independence on the part of the student. Problems include: "System Model,""Open-Loop Simulation,""PID Control,""Dahlin…

Addresses the principles and problems associated with the use of significant figures. Explains uncertainty, the meaning of significant figures, the Simple Rule, the Three Rule, and the 1-5 Rule. Also provides examples of the Rules. (ML)

Examines principles which can be applied to determine how hints can be used effectively in problem-solving. Conscious and unconscious hints, timing of hints, expected functions, and teaching are discussed. Conscious hints are explained in detail with suggestions and references. Charts are included for types, timing, and expected functions. (DH)

Discusses activities involved in a six-hour workshop program on creativity. Also describes: (1) sources of background information on creativity; (2) ways to evaluate skills in creativity; (3) articles and ideas on creativity and problem-solving, including predictors of problem-solving success; and (4) how to find time to teach problem-solving. (JN)

The ratio factors approach involves recognizing a given fraction, then multiplying so that units cancel. This approach, which is grounded in concrete operational thinking patterns, provides a standard for science ratio and proportion problems. Examples are included for unit conversions, mole problems, molarity, speed/density problems, and…

Presents a method for solving problems related to gas laws, the mole concept, molarity, heats of reactions, and other chemical concepts. Also presents another method which was devised to simplify the teaching of stoichiometric calculations using conversion factors. (JN)

The visuo-spatial centers of the right brain are crucial to being able to problem solve or conceptualize (two abilities necessary for success in understanding science). Yet, current educational format is almost exclusively a left-brain undertaking. Reasons why educators should emphasize right-brain understanding in educational curricula at all…

Describes an experiment (using plastic bags) designed to give students practical understanding on using statistics to evaluate data and how statistical treatment of experimental results can enhance their value in solving scientific problems. Students also gain insight into the orientation and structure of polymers by examining the plastic bags.…

Addresses issues related to the use of microcomputers for solving problems. Includes considerations of the impact of software availability, the nature of software for chemical education, general-purpose software, and dedicated software. (JN)

High performance liquid chromatography (HPLC) is used to separate and quantitate beta-carotene, chlorophyll a, and chlorophyll b originating from collard greens. Experimental procedures used and typical results obtained are discussed. (JN)

Describes the Whimbey-Lochhead approach to help students develop problem-solving skills, providing instructions for using the approach in instructional programs. Includes a list of 70 tactics or heuristics used (or misused) in problem solving. Other ideas and information from books and articles on problem solving are included. (JN)

Provides a brief history of the International Physics Competition (IPC). IPC rules, aims, organization, participants, leaders, finance, language, duration, international jury, problems, evaluation, prizes, and organizers' responsibilities are discussed. Typical problems used and problem solving methods are also discussed. (JN)

Mathematics is an essential element of physics problem solving, but experts often fail to appreciate exactly how they use it. Math may be the language of science, but math-in-physics is a distinct dialect of that language. Physicists tend to blend conceptual physics with mathematical symbolism in a way that profoundly affects the way equations are…

NASA CONNECT is an annual series of free integrated mathematics, science, and technology instructional distance learning programs for students in grades 5-8. This video presents the World Space Congress 2002, the meeting of the decade for space professionals. Topics discussed range from the discovery of distant planets to medical advancements,…

This qualitative study is a critical examination of the rationales for the goal of scientific literacy for all in the United States. Eleven participants, mostly university-based science educators, were interviewed and their comments were analyzed using the methods of grounded theory (constant comparative analysis). The rationales the participants…