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``` MATH TOOLS NEWSLETTER - January 30, 2012 - No. 105

***2012 T^3 International Conference
http://mathforum.org/workshops/t3/chicago2012/
Chicago, March 2-4, 2012.
If you are planning to attend the T^3 conference in Chicago,
make sure to come by Booth 16 to meet Suzanne, Max, and Craig.
Also consider attending Max and Craig's talks on Saturday.

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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: Money
http://mathforum.org/mathtools/tool/19436/
National Library of Virtual Manipulatives (Utah State University)
Learn about money by counting and making change.

***FEATURED TOOL
Tool: Number Grid Level 1
http://mathforum.org/mathtools/tool/25840/
Quincy Brown
First level in a collection of five Number Grid activities.
It displays a section of a matrix containing a set of
consecutive whole numbers. A move from one number to the next
within a row is a change of one; a move from one number to the
next within a column is a change of ten. Level 1 has two
digit numbers.

***FEATURED TOOL
Tool: A Plethora of Polyhedra
http://mathforum.org/mathtools/tool/80441/
Humberto Jose Bortolossi
This is a free JAVA applet that helps users to study spatial
geometry in a dynamic and interactive way. Using it, the user
can rotate, zoom out, zoom in and translate a plethora of
polyhedra. Moreover, the program is able to compute topological
and geometrical duals of each polyhedron. Geometrical
operations include unfolding, plane sections, truncation
and stellation.

***FEATURED TOOL
Tool: Single Fraction Pointer
http://mathforum.org/mathtools/tool/70750/
Shodor: Project Interactivate
Graphically determine the value of a given fraction represented
as a point on a number line. Graphically find a fraction whose
value is the given fraction using an arrow on the number line as
a guide. Single Fraction Pointer is one of the Interactivate
assessment explorers.

***FEATURED TOOL
Tool: Poly
http://mathforum.org/mathtools/tool/17925/
Pedagoguery Software Inc.
Poly is a shareware program for exploring and constructing
polyhedra. With Poly, you can manipulate polyhedral solids on
the computer in a variety of ways. Flattened versions (nets) of
polyhedra may be printed and then cut out, folded, and taped,
to produce three-dimensional models.

***FEATURED TOOL
Tool: Resources for Interactive Whiteboards
http://mathforum.org/mathtools/tool/81683/
Mathsframe.co.uk
These simple maths resources for interactive whiteboards emphasize
student differentiation and progression. All activities are linked
to a key objective/objectives from the UK's Primary Framework. They
are intended to be used for reinforcing and practicing key
mathematical skills and concepts.

***FEATURED TOOL
http://mathforum.org/mathtools/tool/15499/
Cynthia Lanius
The "All About Ratios" activities are designed to introduce ratios
in a concept-building way. The activities can be done on computers
with Internet access or be printed. The author suggests that pairs
of students work together at the computer talking to each other
about the activities. Exercises and quizzes are checked on-line,
and teachers can record the results. Practice answers are hidden
under a tab so that students can easily check their answers.
Problem solving answers are submitted and both the students' and
the correct answer are returned. Teachers can circulate and record
the students' responses.

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