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Newsletter: Math Forum Internet News No. 2.28 (July 14)
Posted:
Jul 12, 1997 6:35 PM


14 July 1997 Vol.2, No.28
THE MATH FORUM INTERNET NEWS
Numeroscope  9th Grade NASA Math Test  NonEnglish Math
THE NUMEROSCOPE  PAUL BURCHARD
http://www.woodrow.org/teachers/math/modules/numeroscope/
The Numeroscope is a multimedia, interactive laboratory for exploring number systems that form the basis for mathematical cryptography. It uses exotic number systems to illuminate the meaning of familiar algebraic operations such as +, , x, /, sqrt, and log.
The modules offer lab activities and discussion topics:
 Addition and Multiples: When counting 'wraps around'  Multiplication, Powers, and Logarithms: How clock numbers behave under multiplication; a discrete logarithm problem  Factoring  Coiling up Clock Numbers; factoring out the influence of primes  Applications to Cryptography (RSA): The multiplicative structure of clocks with pq hours (p,q prime)  "Donut" Numbers  The Square Root: clock numbers and 'imaginary' roots  Galois Numbers  Solving Polynomial Equations: creating larger number systems by imagining solutions to more complicated polynomial equations
You will need a Javacapable browser to use the Numeroscope.
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NASA 9TH GRADE MATH PROFICIENCY TEST
http://www.lerc.nasa.gov/Other_Groups/K12/p_test/math_pro1.html
Practice questions for the Ohio ninth grade proficiency test from the Information Infrastructure Technology and Applications (IITA) K12 Program of the NASA Lewis Research Center in Cleveland, Ohio. Thirty nine questions help build skills in addition, multiplication, problemsolving, and algebra. Explanations why possible answers are correct or incorrect are included, and a question that tests comprehension of basic concepts follows each incorrect answer.
In addition to a Teacher's Resource Center, this site also features a Wind Tunnel Aeronautics Activities project that offers experiments and lesson plans designed to help explain some of the basic principles of aeronautics. Answers to problems and Space Mathematics Worksheets are included.
http://www.lerc.nasa.gov/Other_Groups/K12/classproject.html
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MATH FORUM NONENGLISH LANGUAGE RESOURCES
As a virtual center for mathematics on the Internet, the Math Forum strives to be an international site. We know that not all our users are native speakers of English, so our Internet Resource Collection includes pages of math resources in languages other than English. You can find them by using our searcher to look for French or German or Spanish:
http://forum.swarthmore.edu/dumpgrepform.html
In addition, we have begun to develop pages of links to math resources from French and Spanishspeaking countries, and we welcome your suggestions for additions:
FRENCH http://forum.swarthmore.edu/teachers/french.math.html
SPANISH http://forum.swarthmore.edu/teachers/spanish.math.html
If you have or know of collections of math resources in other languages, we'd be happy to add them to our NonEnglish Language Resource page:
http://forum.swarthmore.edu/teachers/nonenglish.html
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The Math Forum ** 14 July 1997
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