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```MATH TOOLS NEWSLETTER - June 24, 2013 - No. 121

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: Touch Pythagoras
http://mathforum.org/mathtools/tool/206418/
Maurici Carbo
With this app the Pythagorean Theorem is interactive. You
can change the lengths of the legs (dragging),  the length
of the hypotenuse with two fingers and zoom (pinch zoom)
and rotate the figure (dragging). There are 3 ways to view
the Pythagorean theorem, including showing the unit
surfaces, two equivalent squares containing the same
surface and the square for each leg in the square of the
hypotenuse. You can change the precision of the lengths.

***FEATURED TOOL
Tool: Parachute Drag
http://mathforum.org/mathtools/tool/23644/
Maryland Virtual High School
Explore the effects of mass, displacement, and drag on the
functioning of a parachute in this simulation.

***FEATURED TOOL
Tool: Coin Box
http://mathforum.org/mathtools/tool/134190/
NCTM: Illuminations
Learn how to count, collect, exchange, and make change for
coins. The coin tiles help you count as you learn the value
of each coin. How many of the games can you master?

***FEATURED TOOL
Tool: Data Games: Lunar Lander
http://mathforum.org/mathtools/tool/188497/
KCP Technologies, U Mass-Amherst
Students develop their skills with polynomial and rational
expressions to create formulas that evaluate lunar
landings. [Access requires setting up a (free) login.]

***FEATURED LESSON PLAN
Lesson Plan: Math Forum Teacher Packet: TI Activity: Ferris Wheel
http://mathforum.org/mathtools/lesson/161769/
Max Ray
This packet contains a copy of the original problem used to create
the activity, rationale and explanation behind the "Make a
Mathematical Model" focal activity, and some thoughts on why this
activity works well with TI-NspireTM technology.

***FEATURED SUPPORT MATERIAL
Support Material: Factors, Primes, and Factorization
http://mathforum.org/mathtools/support/96431/
Wayne Allen Bateman
This interactive multimedia tutorial explores prime numbers
and factors, without the use of division per se.

***FEATURED DISCUSSION
notice: web seminar on simulations in STEM
mathew announces, "Next Live Session - 10 July 2013, 07:00AM GMT. 'Towards a
framework for games and simulations in STEM subject assessments'"

***FEATURED DISCUSSION
Android software: Calculate formulas entered by the user

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