This title is part of a three-book Teaching Number Sense series that focuses on the critical role that number sense plays in developing mathematical understanding. Number sense encompasses a wide range of abilities, including being able to make reasonable estimates and to think and reason flexibly. These lessons help students develop good number intuition and the ability to see numbers as tools, not barriers.
This easy-to-read book demonstrates how a simple geometric idea reveals fascinating connections and results in number theory, the mathematics of polyhedra, combinatorial geometry, and group theory. Using a systematic paper-folding procedure it is possible to construct a regular polygon with any number of sides. This remarkable algorithm has led to interesting proofs of certain results in number theory, has been used to answer combinatorial questions involving partitions of space, and has enabled the authors to obtain the formula for the volume of a regular tetrahedron in around three steps, ...
Added by: ypalladium | Karma: 1.12 | Black Hole | 14 September 2010
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1000 Trios
A handbook useful for students of English or those who wish to practice for their CPE exam. The more triples you solve, the better your English comprehension will be. A set of 1000 triples (gapped sentences), beginning with easy exercises and heading towards more difficult ones. While practising, you will come across a number of words' meanings and various collocations.
http://englishtips.org/1150804290-1000-trios.html
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This introductory textbook is designed to teach undergraduates the basic ideas and techniques of number theory, with special consideration to the principles of analytic number theory. The first five chapters treat elementary concepts such as divisibility, congruence and arithmetical functions. The topics in the next chapters include Dirichlet's theorem on primes in progressions, Gauss sums, quadratic residues, Dirichlet series, and Euler products with applications to the Riemann zeta function and Dirichlet L-functions. Also included is an introduction to partitions.
Number Twelve is an urban legend in 2060 New York City. The hot club in the 1960s, it is now reported to be haunted…and cursed. Lieutenant Eve Dallas is called there to investigate the apparent murder of Radcliff Hopkins, its new owner and the grandson of the man who made Number Twelve a cultural icon. Several bullets from a banned gun end his dream of returning the building to its former glory.
