Math Tools Newsletter December 23, 2013 - No. 127 --------------------------- Announcements --------------------------- 2014 MATHEMATICS GAME http://mathforum.org/yeargames/ The 2014 Year Game challenges students to write expressions for each of the counting numbers 1 through 100, using the digits in the year 2014, standard operations, and grouping symbols. View the rules, worksheet, and manipulatives for 2014 now before submitting your own solutions starting January 1st, which we'll start displaying on February 1, 2014. IAS/PCMI SUMMER 2014 http://pcmi.ias.edu/application-sstp Does any rectangle have perimeter and area of the same numerical value? Can the plane be tiled with kites and chevrons? In how many ways can 1/2 be written as a sum of unit fractions? Come investigate these questions — and find out how they are related — at the Park City Mathematics Institute (PCMI). A program of the Institute for Advanced Study (IAS), PCMI has just begun accepting applications for the 2014 Summer Session of the IAS/PCMI Secondary School Teachers Program (SSTP). Participating teachers receive full support and a stipend during this residential program, which takes place in Park City, Utah, from June 29 - July 19, 2014. Six quarter-credits of 400-level mathematics are available from the University of Washington. ILLUMUNIATIONS: BIGGER AND BRIGHTER http://illuminations.nctm.org/ The Illuminations site now sports a right-hand panel for searching its interactive tools and instructional support according to the NCTM Principles and Standards along with Common Core State Standards in Mathematics (CCSSM). With the re-design, NCTM has also rolled out more than 40 new lesson plans. Illuminations is a project designed by NCTM and supported by the Verizon Foundation. --------------------------- Featured Resources --------------------------- 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. Tool: Virtual Paper Cut and Fold - Mike Sokolov http://mathforum.org/mathtools/tool/34867/ Learn how to make snowflake patterns and create a five-pointed star. The interactive site offers both a Flash tool and a faster, more fully-featured Java applet that allows you to save the snowflakes to a gallery, as well as links to other sites with instructions for making snowflakes and stars by folding and cutting paper. Tool: Old Egyptian Fractions for Android - Wendy Petti & Maurici Carbo http://mathforum.org/mathtools/tool/233557/ This is the android version of the Mathcats Old Egyptian Fractions: Old Egyptian Math Cats knew fractions like 1/2 or 1/4 (one piece of a pie). But to make fractions like 3/4, they had to add pieces of pies like 1/2 + 1/4 = 3/4. Old Egyptian Math cats never repeated the same fraction when adding. They never wrote: 1/4 + 1/4 + 1/4 = 3/4. With the Android app Old Egyptian Fractions can practice this type of decomposition in a very visual way. Tool: Koch Snowflake: Java Version - Cynthia Lanius http://mathforum.org/mathtools/tool/15477/ Users will build the Koch Snowflake incrementally using a Java Applet. Tool: CPI Inflation Calculator - Bureau of Labor Statistics http://mathforum.org/mathtools/tool/233876/ The CPI inflation calculator uses the average Consumer Price Index for a given calendar year. This data represents changes in prices of all goods and services purchased for consumption by urban households. This index value has been calculated every year since 1913. For the current year, the latest monthly index value is used. Tool: KENKEN Classic II (for Android) - KenKen Puzzle http://mathforum.org/mathtools/tool/233877/ KenKen is a grid-based logic puzzle and math game. For a 3x3 puzzle, use the numbers 1-3; for a 4x4 puzzle, fill in with numbers 1-4; for a 5x5 puzzle, use the numbers 1-5, and so on. Do not repeat a number in any row or column. Full instructions are available in the app for your convenience. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Quick Links... Math Tools - http://mathforum.org/mathtools/ Newsletter Archive - http://mathforum.org/mathtools/newsletter/ Math Topics - http://mathforum.org/mathtools/sitemap.html Discussions - http://mathforum.org/mathtools/discuss.html Community - http://mathforum.org/community/ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ The Math Forum @ Drexel is a research and educational enterprise of the Drexel University School of Education http://goodwin.drexel.edu/soe/