Volume 3, Number 13

 ``` 30 March 1998 Vol. 3, No. 13 THE MATH FORUM INTERNET NEWS Event Inventor | Mathematical Constants | Measuring Mt. Everest THE EVENT INVENTOR - Kye Ewing http://kyes-world.com/ Science, math, and technology explorations for teachers and students - no experience necessary. In PYTHAGORAS' PLAYGROUND students make their own quadrants and cross staffs to explore the world, and find the heights of buildings or trees using Pythagoras' theorem. http://kyes-world.com/pythagor.htm KYE'S SKIES offers low-tech astronomy explorations: http://kyes-world.com/kyesky.htm Sun Projects shows how to measure time and latitude using only your hands, and offers information on pinhole cameras and solar eclipses. http://kyes-world.com/sun.htm Lunar Learning outlines how to measure the Moon's diameter or its distance from Earth. http://kyes-world.com/lunar.htm -|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|- MATHEMATICAL CONSTANTS FAVORITE MATHEMATICAL CONSTANTS - Steven Finch http://www.mathsoft.com/asolve/constant/constant.html "All numbers are not created equal; that certain constants appear at all and then echo throughout mathematics, in seemingly independent ways, is a source of fascination. Just as physical constants provide 'boundary conditions' for the physical universe, mathematical constants somehow characterize the structure of mathematics." This site by Steven Finch of the R&D Team, MathSoft, Inc. offers listings, histories, and references for well-known constants, as well as constants associated with: - Number Theory - Analytic Inequalities - Approximation of Functions - Enumerating Discrete Structures - Functional Iteration - Complex Analysis - Geometry \|/ PLOUFFE'S INVERTER - Simon Plouffe http://www.lacim.uqam.ca/pi/ A database of mathematical constants such as Pi, Sqrt(2), Catalan's constant, and Euler's gamma. Enter a number and the programs will find what the number is made of. The database is a collection of a few hundred tables that have from 50 to 11,000,000 entries. In addition there are a database of Integer entries and a database of digits of constants. From Simon Plouffe, author of the Encyclopedia of Integer Sequences (with Neil J.A. Sloane) and the Inverse Symbolic Calculator (ISC). -|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|- HEIGHT OF MT. EVEREST - a MATH-TEACH TOPIC http://mathforum.org/epigone/math-teach/zostylerd "At today's lesson about using trig and angle of elevation to estimate height of objects, someone asked what is the actual method used to estimate the height of mountains like Mt. Everest. Anyone know the 'correct' answer? Thanks." - Wong Khoon Yoong This topic comes from the MATH-TEACH discussion group, a good place to ask your math education questions. Responses suggested a video, a book: Everest - Mountain Without Mercy by Broughton Coburn (see the article "The Elusive Height of Everest" by Roger Bilham), and a Web page: MEASURING A MOUNTAIN by Terri Shaw for the Washington Post: http://wp4.washingtonpost.com/wp-srv/interact/longterm/horizon/everest.htm For more MATH-TEACH threads, see the Math Forum's Web archive or subscribe to the mailing list. http://mathforum.org/discussions/about/math-teach.html -|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|- SUMMER 1998 MATH WORKSHOPS http://mathforum.org/teachers/workshops/ Looking for a summer workshop? Browse the Math Forum's collection of math and math education workshop announcements organized by level - or search by selecting location, topic, date, and/or level. To submit an announcement, fill out the form provided. -|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|- CHECK OUT OUR WEB SITE: The Math Forum http://mathforum.org/ Ask Dr. Math http://mathforum.org/dr.math/ Problems of the Week http://mathforum.org/students/ Internet Resources http://mathforum.org/~steve/ Join the Math Forum http://mathforum.org/join.forum.html Send comments to the Math Forum Internet Newsletter editors _o \o_ __| \ / |__ o _ o/ \o/ __|- __/ \__/o \o | o/ o/__/ /\ /| | \ \ / \ / \ /o\ / \ / \ / | / \ / \ ```