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rational number |
Also found in: Wikipedia, Hutchinson | 0.03 sec. |
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rational number: see number number, entity describing the magnitude or position of a mathematical object or extensions of these concepts.
The Natural NumbersCardinal numbers describe the size of a collection of objects; two such collections have the same (cardinal) number of ..... Click the link for more information. . rational numberAny number that can be represented as the quotient of two integers (i.e., the denominator cannot equal zero). The set of rational numbers includes all integers as well as all fractions. In decimal form, rational numbers are either terminating or repeating decimals. rational number any real number of the form a/b, where a and b are integers and b is not zero, as 7 or 7/3 rational number [′rash·ən·əl ′nəm·bər] (mathematics) A number which is the quotient of two integers. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| The article selected for the following assignment, while quite brief, did engage the students in an elementary classroom dialogue focused on a discussion of subtraction of rational numbers and involved multiple representations. From Xeno's paradox to an articulate explanation of string theory and Cantor's reasoning that there are the same number of integers and rational numbers (akin to saying that the number of integers is the same as the number of even numbers), this book will make these fascinating ideas accessible to the non-physicist and non-mathematician. Research on rational numbers and multiplicative structures suggests that many K-8 teachers do not have the understanding required in proportional reasoning (Cramer & Lesh, 1988; Harel & Behr, 1995). |
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