Are Common Fractions Out-of-Date?

1979 ◽  
Vol 80 (1) ◽  
pp. 19-23 ◽  
Author(s):  
Donald M. Peck ◽  
Stanley M. Jencks
Keyword(s):  
Common Fractions

Comparing Common Fractions

2021 ◽  
pp. 36-36
Author(s):  
Judy Leimbach ◽  
Kathy Leimbach ◽  
Mary Lou Johnson
Keyword(s):  
Common Fractions

Let's Do It Fractions with Models

1980 ◽  
Vol 27 (9) ◽  
pp. 6-11
Author(s):  
Larry P. Leutzinger ◽  
Glenn Nelson
Keyword(s):  
The Past ◽  
Common Fractions

There is still value in learning about common fractions, even with the increased use of the metric system of measurement. In the past, much of the computation with common fractions has resulted from measurement situations with the customary system.

The Division of Common Fractions

1960 ◽  
Vol 7 (3) ◽  
pp. 133-134
Author(s):  
Theodore S. Kolesnik
Keyword(s):  
Good Deal ◽  
Inversion Method ◽  
Common Denominator ◽  
Common Fractions ◽  
The Common ◽  
The One

There has been a Good Deal of discussion recently in regard to the best method of teaching the division of common fractions. Some teachers believe that the common denominator method is the one that should be taught. Others feel that the inversion method is best if it is preceded or followed by an explanation of why the inversion is mathematically sound. Another group feels that the inversion method should simply be “algorized” with any rationalization being delayed until such time that the pupil is mature enough to understand the complex fraction that is involved in the rationalization. Still another group favors the teaching of all methods with the pupil selecting the one that he particularly favors.

Historical Conflict—Decimal Versus Vulgar Fractions

1960 ◽  
Vol 7 (4) ◽  
pp. 184-188
Author(s):  
Emily Jones
Keyword(s):  
Relative Importance ◽  
Common Fractions ◽  
History Of ◽  
Arithmetic Teaching

The question of the relative importance of decimal and common fractions arose early in the history of arithmetic teaching in America. The proper emphasis that should be placed on each of these ropics, the space that should be assigned to them, and the order in which they should be treated claimed the attention of many of the first American textbook writers.

Common Fractions

2009 ◽  
Author(s):  
Stephen J. Lurie ◽  
Margaret A. Winker
Keyword(s):  
Common Fractions

Quantum defect and common fractions

2021 ◽  
Vol 64 (1) ◽  
pp. 29-34
Author(s):  
O.G. Verin
Keyword(s):  
Hall Effect ◽  
Quantum Hall Effect ◽  
Quantum Hall ◽  
Fractional Quantum Hall Effect ◽  
Outer Shell ◽  
Quantum Defect ◽  
Fractional Quantum ◽  
Fractional Quantum Hall ◽  
Quantum Mechanical Description ◽  
Common Fractions

The common fractions N1/N2, where N1 and N2 - the small integers, quite often are used at the quantum-mechanical description of microcosm objects (for example, fractional charges of quarks and some quantum characteristics, such as particles spin). Recently the fractional quantum Hall effect was discovered, and common fractions have considerably expanded their presence in microcosm physics. The theory of the fractional quantum Hall effect has appeared nontrivial, so the Nobel Prize on physics in 1998 was awarded not only for discovery of the effect in 1982 (Daniel Tsui and Horst Störmer) but also for the theory creation in 1983 (Robert Laughlin). And now one more sensational discovery: common fractions were «detected» at the analysis of experimental characteristics of «hydrogen-like» atoms and ions (with only one electron on an outer shell). It has appeared, that the effective main quantum number of outer shell electron, that is, subject to quantum defect (Rydberg correction), can be expressed in common fractions.

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