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```MATH TOOLS NEWSLETTER - April 27, 2013 - No. 119

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***FEATURED DISCUSSION
Best applet to plot probability of a flat tire while cycling
pbr announces, "I would like to have an applet graphing
multiple curves of a discrete variable x according to
2 parameters that the user should be able to set."

***FEATURED TOOL
Tool: KenKen Classic
http://mathforum.org/mathtools/tool/133569/
KenKen Puzzle
KenKen challenges you to complete a grid without repeating a
number in any row or column. The catch? The numbers in each
heavily outlined set of squares must combine to produce the
target number in the top corner, and do so using the
mathematical operation indicated. Featured in The New York
Times by famed puzzle master Will Shortz and published in
more than 35 other periodicals across the United States.
puzzles can be purchased. Compatible with iPhone, iPod
touch, and iPad. Requires iOS 4.3 or later.

***FEATURED TOOL
Tool: Touch Fraction
http://mathforum.org/mathtools/tool/200416/
Maurici Carbo
Touch Fraction lets you visualize positive and negative
fractions -- and zoom into equivalent fractions using the
rational representation diagram.

***FEATURED TOOL
Tool: Splash Math Kindergarten
http://mathforum.org/mathtools/tool/199738/
Prequel to the Splash Math Series Grades 1 to 5, the
Splash Math Kindergarten app allows kids to get started
with math practice.

***FEATURED TOOL
Tool: We Can Do Math!
http://mathforum.org/mathtools/tool/199736/
Vinay Jain
Timed practice in basic operations; toggle up and down or
her dad," this JavaScript offers two levels with a "check"
button that scores responses, as well as a "rapid fire" mode
that instantly displays a new problem after each correct
result.

***FEATURED TOOL
Tool: Graphing Calculator
http://mathforum.org/mathtools/tool/191883/
Vernon Morris
Meta Calculator is a free online multi-purpose calculator
that supports the majority of calculator features used in
high school or college.

***FEATURED TOOL
Tool: 1st Grade Math: Back to School Splash Math
http://mathforum.org/mathtools/tool/176703/
Splash Math has 13 chapters covering over 185 math skills
and a supply of problems.

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