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Peer reviewedErcolano, Joseph – Mathematics Teacher, 1979
A method for converting francs to dollars and dollars to francs is shown to involve the harmonic mean. (MP)
Descriptors: Instruction, Mathematical Applications, Mathematics, Number Concepts
Peer reviewedLitwiller, Bonnie H.; Duncan, David R. – School Science and Mathematics, 1978
A formula for predicting population, given past data, is presented. Decade census reports for the United States are used to analyze problems that might occur in prediction. (MP)
Descriptors: Instruction, Mathematical Applications, Mathematics, Population Growth
Peer reviewedRockwell, Clarence H.; Tredway, Dan – School Science and Mathematics, 1978
A step-by-step procedure for converting a secondhand platform balance to the metric system is outlined for use as a student project. (MP)
Descriptors: Elementary Secondary Education, Instruction, Learning Activities, Measurement
Peer reviewedKnaus, Ronald M.; Knaus, Christopher G. – Mathematics Teacher, 1979
A proof is given that in the purchase price, sales tax followed by discount is the same as discount followed by sales tax. (MP)
Descriptors: Algebra, Distributive Education, Mathematical Applications, Mathematics
Peer reviewedWitczak, Terry A. – Mathematics Teacher, 1979
This puzzles uses a crossword format with the entries being factors of given polynomials. (MP)
Descriptors: Algebra, Instruction, Instructional Materials, Learning Activities
Peer reviewedMorgan, Raymond V.; Warnock, Tony T. – Mathematics Teacher, 1978
The purpose of this article is to point out some of the problems that arise in the use of calculators to illustrate derivatives, due to rounding or truncation, by the calculator. Several illustrations of numerical differentiation techniques are also given. (Author/MP)
Descriptors: Calculators, Calculus, Error Patterns, Mathematics
Peer reviewedScott, P. R. – Australian Mathematics Teacher, 1978
Investigated here are some of the results which can be obtained using the double-sided straight edge. Seventeen possible constructions are presented with solutions or partial solutions given to most. (MP)
Descriptors: Geometry, Plane Geometry, Problem Sets, Problem Solving
Peer reviewedGreitzer, Samuel L. – Mathematics Teacher, 1978
This discussion of the results of the mathematical Olympiad contains the average scores on each of the five problems, the winner of the Olympiad, and the Olympiad problems. (MP)
Descriptors: Mathematical Enrichment, Secondary Education, Secondary School Mathematics, Test Items
Oglesby, Mac – Calculators/Computers Magazine, 1978
A computer program for PET users is presented that simulates a probability machine. (MP)
Descriptors: Computer Programs, Computers, Games, Instructional Materials
Cook, John – Calculators/Computers Magazine, 1978
A BASIC computer program is given that simulates the effects of alcohol. A student enters his/her weight, the number of hours of drinking, the kind of alcoholic beverage consumed, and the number of drinks consumed. The program also prints the resulting effect on behavior. (MP)
Descriptors: Alcohol Education, Computer Programs, Computers, Instruction
Peer reviewedSimpson, Peter A. – Mathematics Teacher, 1978
An algorithm for long division is presented that involves only addition and subtraction. (MP)
Descriptors: Algorithms, Computation, Division, Elementary Secondary Education
Peer reviewedWahl, M. Stoessel – Mathematics Teacher, 1978
Detailed instructions are given for the construction of the rhombic dodecahedron templates. A discussion of symmetries is included as background information. (MP)
Descriptors: Geometry, Instruction, Learning Activities, Secondary Education
Peer reviewedMiller, William A.; Hazekamp, Donald W. – Mathematics Teacher, 1978
The calculator is used to obtain values for use in graphing curves. Three worksheets are included. (MP)
Descriptors: Calculators, Computation, Graphs, Instruction
Peer reviewedMercer, Maryann – School Science and Mathematics, 1978
Teachers can determine the content validity of standardized tests before using them. Two tests are compared to illustrate the process. (MP)
Descriptors: Achievement, Course Content, Secondary Education, Secondary School Mathematics
Peer reviewedVest, Floyd – Mathematics Teacher, 1979
Practical decisions involving fuel economy are shown to require important skills from secondary school algebra and analysis. (MP)
Descriptors: Algebra, Graphs, Instruction, Learning Activities
