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     MATH TOOLS NEWSLETTER - July 26, 2012 - No. 110

Do you or one of your colleagues have a question about
teaching mathematics? Are you wondering about how to best
implement the Common Core State Standards for your grade
level? Teacher2Teacher (T2T) is a free service provided
by the Math Forum and staffed by our T2T Associates:
Submit your question online here and receive a private,
individual response via email:

***Join us for an Open House at the Math Forum
August 2, 2012
Planning to be in Philadelphia next week? The Math Forum 
is throwing back the curtains, dusting off the desks and 
opening our doors! Come help us celebrate 20 years of 
the Math Forum. Stop by our offices on August 2nd from 
2:30-4:30pm, have some cake, meet and chat with our staff, 
and play some great math games.


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: Tip Jar
What's the deal with all the tip calculators in the App 
Store? Is calculating 15% hard? Nope, and this lesson uses
percents to explore the math of eating -- and working -- in
a restaurant, from leaving tips to deciding where to work.

Tool: Plomplex (complex function plotter)
Plomplex is a complex function plotter using domain coloring. 
You can compose a function with a complex variable z, and 
generate a domain coloring plot of it. You can choose the plot 
range as well as the plot size. Iteration is also available 
(such as "f(f(x))"). Requires the Google Chrome browser.

Tool: The Trig Jig
Vika Wasyliw, Grace Ulinski, Ellie Bayles, Steve Weissburg
This dance was intended to be an easy way to remember the 
graphs of six basic trigonometric functions: sine, cosine, 
tangent, cosecant, secant, and cotangent.

Tool: Derivative Calculator
David Scherfgen
A symbolic online calculator for derivatives and partial 
derivatives. The user input is transformed into a graphical 
formula while typing in order to avoid typing mistakes.

Tool: Algebra Touch
Regular Berry Software LLC
An algebra practice program for anyone working on simplifying 
expressions and solving equations. Create your own sets of 
problems to work through in the equation editor, and have 
them appear on all of your devices with iCloud.

Tool: Fourth Grade Splash Math [Lite]
The full version of Splash Math has 13 chapters covering over 
185 math skills and a supply of problems appropriate for fourth 
grade students. This "lite" version provides free access to 
two of the 13 chapters, including "Place Value" (numbers to a
million) and "Number Sense" (compare, order, and round numbers).

Area, Volume, and Pythagorean apps
jmeapps announces, "JMEapps is dedicated to development of simple, 
easy-to-use apps for students (and professionals...). They are free, 
so check them out! You can find the apps on GooglePlay. If you have 
suggestions for apps, please feel free to email. Thanks!"

RE: Imagine Cup winners! - now the World Champions!
Suzanne adds to an ongoing discussion, "and ... drum roll, the news
on July 11 was: 'Drexel University computer science graduates Matt 
Lesnak, Keith Ayers and N. Taylor Mullen claimed a world championship 
in the Microsoft Imagine Cup technology design competition after 
their "Math Dash" game rose to the top from a field of 106 teams from 
75 countries.' Read more details here:"


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  The Math Forum @ Drexel -- 26 July 2012