Presents the second in a series of articles in which problems related to introductory physics courses are presented. The twenty problems deal with nearly all aspects of physics and are presented in a practical and thought-provoking manner. (RR)

Study results indicate that teachers should be less concerned with teaching relationships between problem elements and more concerned with helping students to identify logical assumptions made in problem statement. (Author)

This article is in two parts: discussion of mathematical concepts involved in converting the reading from the tape-recorder counter which counts the turns of the run-off spool to that from the counter which counts turns of the take-up spool; calculating the length of tape run off when given the reading from the tape-recorder counter of the run-off…

Information about a student-run mathematics tournament is presented. Included are sample test questions created by students. (MP)

Four different types of problems from graph theory are presented and discussed. (MK)

Five graded sets of examples of alphametrics are provided. The puzzles are suggested for use in developing the traits of considering all possibilities and systematic working. (MP)

Presents a word problem designed to encourage students to create systematic methods for counting and develop probability concepts. Involves sharing eight cookies between three people. (KHR)

Age-related changes in children's performance on simple division problems (e.g., 6 divided by 2, 72 divided by 9) were investigated by asking children in Grades 4 through 7 to solve 32 simple division problems. Differences in performance were found across grade, with younger children performing more slowly and less accurately than older children.…

Questions and answers to biochemistry four topics are presented. Items include fatty acid synthesis, reaggregation of sponge cells, enzymic degradation of pollutants, and energy requirements of organisms. (RWH)

The history of alligation problems as a part of the mathematics curriculum is briefly reviewed, and the non-unique nature of the solutions to many problems is discussed. (SD)

Three questions and answers involving chemistry are presented. Question one involves elimination of reptiles from the earth; the second considers chemical effects on taste acuity; the third relates to muzzle velocity of a projectile fired from a gun and temperatures inside the cartridge. (MLH)

Research indicates that students' learning performance can be improved through techniques of "action-feedback-correction," which involves the student answering questions, feedback on which answers are right and which wrong, and repetition of the process until the right answer is achieved. Such a system can easily be devised using objective…

A problem is posed concerning the area of certain parts of a plane geometric figure. The problem was used in a student contest with 71 of 270 mathletes answering correctly. An outline of the general proof is given. (LS)

This problem deck is designed for use after having covered the material in an accompanying skills booklet. It provides for further use of the skills with problems involving four skills at five levels of difficulty. The four skills involve using guesses as a strategy in solving computation problems, two-step problems, situations that require…