MATH TOOLS NEWSLETTER - August 19, 2011 - No. 100 We are reaching a milestone with this issue -- it is our one hundredth issue! ***MATH FORUM POW SURVEY As the school year begins, we are reflecting on the Problems of the Week. If you've never tried the PoWs before, take them for a spin free for 21 days with a trial account: http://mathforum.org/products/trial.html The Math Forum is a community affair and some of our members are planning new projects and ways to involve their students in problem solving. As a result, we are considering possible innovations and also planning how to provide more effective service in the future. Here's a chance to open some new opportunities for your students and help the community by completing a brief survey: http://mathforum.org/pow/survey.html Your quick response will help us with any changes for the upcoming school year, but we welcome your thoughts, suggestions, and questions at any time. Since writing all-new software to power our PoWs two years ago, we've rolled out additional features every month. Many of these updates improve operations behind-the-scenes. For the most visible changes, check out http://mathforum.org/pow/improvements.html If you are a subscriber but your subscription has expired, please consider renewing: http://mathforum.org/renewal.html \|/ As you browse the catalog, please take a moment to rate a resource, comment on it, review it -- join an existing conversation, or start a new discussion! ***FEATURED TOOL Tool: Sketchpad Explorer http://mathforum.org/mathtools/tool/133734/ KCP Technologies, Inc. The multitouch interface of the Sketchpad Explorer app lets you interact with, and investigate, any document created with The Geometer's Sketchpad. Drag, manipulate and animate visual mathematics to develop and generalize your understanding of fundamental concepts across elementary math, geometry, algebra, trigonometry, calculus, and beyond. ***FEATURED TOOL Tool: Gross Domestic Product Deflator Inflation Calculator http://mathforum.org/mathtools/tool/133368/ NASA This is an inflation calculator for adjusting costs from one year to another using the Gross Domestic Product (GDP) Deflator inflation index. This inflation calculator is based on the inflation rate during the US Government Fiscal Year, which begins on October 1 and ends on September 30. This inflation calculator will compute inflation from 1940 to 2009. ***FEATURED TOOL Tool: MathTappers: Multiples http://mathforum.org/mathtools/tool/133565/ HeavyLifters Network Ltd. This game is designed to help learners to make sense of multiplication and division with whole numbers, and then to support them in developing fluency while maintaining accuracy. Compatible with iPhone, iPod touch, and iPad. Requires iOS 3.1.3 or later. ***FEATURED TOOL Tool: Everyday Mathematics Name That Number http://mathforum.org/mathtools/tool/133687/ McGraw-Hill School Education Group This game offers a way to practice computation and order of operations. Players use five number tiles to build number sentences that equal a target number. Players can name the target number by adding, subtracting, multiplying, and/or dividing the numbers using as many tiles as possible. The more tiles the player uses, the more points he or she earns. There are a total of 5 rounds in a game. Visual and audio reinforcement of correct and incorrect answers helps players master math facts and order of operations. Compatible with iPhone, iPod touch, and iPad. Requires iOS 3.0 or later. ***FEATURED TOOL Tool: Scientific Calculator graphic http://mathforum.org/mathtools/tool/133499/ Amir Rashedi This scientific calculator with some graphing capability uses either Cartesian or polar coordinate systems. Expressions can include any of the following: - Basic algebraic operations - Exponential and logarithmic functions - Trigonometric functions and their inverses - Hyperbolic functions and their inverses - Absolute value and step functions ***FEATURED TOOL Tool: Stay or Switch? - The Monty Hall Problem http://mathforum.org/mathtools/tool/134020/ Jeremy Jones Players choose one of three doors to experimentally determine the odds of winning the grand prize behind one of the doors, as in the TV program "Let's Make a Deal." This site provides a variety of "explanations" and also a history of how the problem became famous in a newspaper column by Marilyn vos Savant in 1990. ***FEATURED Lesson Plan Lesson Plan: Real Estate Tycoon http://mathforum.org/mathtools/lesson/134192/ NCTM: Illuminations In this year-long project, students design, "build," and "sell" a house; after which they simulate investment of the profits in the stock market. Along the way, students make scale drawings, compute with fractions and decimals in various contexts, and even solve simple equations. This lesson plan was adapted from an article by David B. Smith, which appeared in the September 2000 edition of Mathematics Teaching in the Middle School. ***FEATURED TECHNOLOGY POW (Spanish and English versions) Technology PoW: Cuantos Cubos? http://mathforum.org/mathtools/tpow/21069/ Technology PoW: How Many Cubes? http://mathforum.org/mathtools/tpow/5857/ Stephen Weimar and translated by Bernadette Baird-Zars and Johann Sarmiento Given the front view and side view of an arrangement of cubes, students are asked for the largest number of cubes that could have been used to make the arrangement, as well as the smallest number possible. A link to Space Blocks, a Java applet from the National Library of Virtual Manipulatives, is provided to help students think about the possible arrangements. NOTE: A free login is required. Sign up using the link on the login page, or use your existing KenKen or Problems of the Week login--see this page for details: http://mathforum.org/tpow/ CHECK OUT THE MATH TOOLS SITE: Math Tools http://mathforum.org/mathtools/ Register http://mathforum.org/mathtools/register.html Discussions http://mathforum.org/mathtools/discuss.html Research Area http://mathforum.org/mathtools/research/ Developers Area http://mathforum.org/mathtools/developers/ Newsletter Archive http://mathforum.org/mathtools/newsletter/ Twitter Feed http://mathforum.org/pd/twitter.html Blogs http://mathforum.org/blogs/ Facebook http://www.facebook.com/themathforumatdrexel \`. .--------------.___________) \ |//////////////|___________[ ] `--------------' ) ( '-' The Math Forum @ Drexel -- 19 August 2011