### Volume 2, Number 40

 ``` 6 October 1997 Vol. 2, No. 40 THE MATH FORUM INTERNET NEWS Stock Market Project | Spatial Puzzles - Jenicek | Math & Public Policy THE GOOD NEWS BEARS STOCK MARKET PROJECT http://www.ncsa.uiuc.edu/edu/RSE/RSEyellow/gnb.html This interdisciplinary project for middle school students and teachers includes lesson plans for English, Math, and Social Studies, stock basics lessons, Internet links, and teacher record sheets. The teacher may be the stock broker (best where there's a single-line connection), or the students may be brokers (as in a networked lab environment). The project involves an interactive stock market competition between classmates using real-time stock market data from the New York Stock Exchange and NASDAQ. Objectives: - to recognize and use terms related to market activities - to use research tools on the Web to make informed decisions in developing a stock portfolio - to allow students to track and manage their own portfolios of stocks - to recognize the effect that economic indicators, company management, political climate, foreign relations, and other variables have on the stock market Students will learn to analyze their own stock data in relation to the fluctuating indicators. -|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|- SPATIAL RELATIONS PUZZLES - JAY JENICEK The SOMA Cube Page http://lonestar.texas.net/~jenicek/home/som_butt.gif A seven piece three-dimensional puzzle made up of three or four cubes apiece, invented by Piet Hein, the Danish writer. The seven pieces may be arranged into billions of different combinations. Piet Hein's theorem states that if you take all the irregular shapes that can be formed by combining no more than four cubes, all the same size and joined at their faces, these shapes can be put together to form a larger cube. Jenicek provides instructions for building a SOMA cube, challenging shapes to attempt (with solutions), an example of a SOMA proof, a SOMA cube Java applet, and links to other SOMA web sites. The PENTOMINOS Page http://lonestar.texas.net/~jenicek/home/pen_butt.gif A pentomino is a shape made by joining five squares edge to edge to form various combinations. There are twelve possible shapes in a set of unique pentominos, named T, U, V, W, X, Y, Z, F, I, L, P, and N. (You might remember all the letters from the end of the alphabet, TUVWXYZ, and the capital letters in the word FILiPiNo. ) The first pentomino problem was written by the English puzzle inventor Henry Ernest Dudeny in 1907; Solomon W. Golomb gave the puzzle its name. This page features five basic games with variations and links to other pentomino sites. -|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|- MATHEMATICS AND PUBLIC POLICY http://mathforum.org/social/math.publicpol.html Links to organizations that attempt to influence public policy where mathematics and science are concerned, from the American Association for the Advancement of Science (AAAS) to the Joint Policy Board for Mathematics (JPBM). This page from the Math Forum is part of its exploration of Key Issues for the Math Community: http://mathforum.org/social/ -|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|- CHECK OUT OUR WEB SITE: The Math Forum http://mathforum.org/ Ask Dr. Math http://mathforum.org/dr.math/ Problem of the Week http://mathforum.org/geopow/ 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\ / \ / \ / | / \ / \ ```