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22 April 2002 Vol. 7, No. 16 THE MATH FORUM INTERNET NEWS Project Welcome - MAA | Interactive Number Sequences Animated Magic Squares - Grunwald PROJECT WELCOME - MAA http://www.math.metrostate.edu/welcome Project WELCOME is a collection of interactive mathematical explorations to support a suite of undergraduate courses in mathematics. Each exploration consists of organized sequences of simulations, "quantitative/qualitative laboratory" experiments, lessons, and/or open-ended exercises tied to the conceptual themes of the targeted course. These explorations are created in MathwrightWeb Author and read either online within the browser (applet mode) using MathwrightWeb Activex Control or offline using Mathwright32 Player. Viewing the interactive explorations requires running Microsoft Windows 95/98/2000/ME/XP and using Internet Explorer 5.0 or later. The collection includes: - Best Linear Fit - Congruences - Evolutes - Limits of Functions - Optimize: the classic box problem - Piecewise Functions - Symmetry - Progeny: the Fibonacci sequence and golden ratio - Nonlinear Equations - Inclined Planes - Lakes: an environmental application of operations research - Cycloids - Applications of the Derivative - Graphs and Their Functions - Trigonometric Functions - Triangle Optimization - Graphs of Functions and Symmetry - Playing with Points: the coordinate plane - Shortest Paths - Demoivre's Theorem Read descriptions of each workbook: http://www.math.metrostate.edu/welcome/wrkbk_page.htm -|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|- INTERACTIVE NUMBER SEQUENCES - H. Fung http://cog.lboro.ac.uk/cohfweb/ An interactive site for middle school students who want to learn about number sequences. Fill in a sequence's missing number, then click "send" to see if it completed the sequence correctly. In either case, an "explain" button provides more information about the sequence, including: - descriptive name - graphic explanation - text explanation - algebraic rule and opportunities to learn more. The FAQ provides answers to questions about sequences and numbers. -|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|- ANIMATED MAGIC SQUARES - Lee-Anne Grunwald http://www-personal.une.edu.au/~lgrunwa2/une/KLAs/maths/magic3x3.html After viewing the construction of a 3 by 3 magic square, pass the mouse over each of the "view rule" texts to build your own magic square. http://www-personal.une.edu.au/~lgrunwa2/une/KLAs/maths/Benfranklin_magicsquare.html The patterns found in the 8 by 8 Benjamin Franklin Magic Square are illustrated in this animation. \|/ MAGIC SQUARES - Suzanne Alejandre http://mathforum.org/alejandre/magic.square.html This Math Forum Web unit includes classroom activities for four different squares: Lo Shu, Sator, DŸrer, and Franklin. Three of them demonstrate increasing complexity using numbers; one is made up of letters. Each provides links, and questions about number and symmetry. For interdisciplinary work, see the suggestions for history, geography, and writing activities. -|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|- 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/pow/ Mathematics Library http://mathforum.org/library/ Teacher2Teacher http://mathforum.org/t2t/ Discussion Groups http://mathforum.org/discussions/ 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\ / \ / \ / | / \ / \ |

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