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```      MATH TOOLS NEWSLETTER - FEBRUARY 3, 2007 - No. 48

As you browse the catalog, please take a moment to rate a
resource, comment on it, review it -- or start a new
discussion!

***FEATURED TOOL
Thinking Blocks - Ratio Word Problems
Colleen King
http://mathforum.org/mathtools/tool/29180/
Thinking Blocks teaches students in grades 4 - 6 how to
model and solve multistep word problems dealing with ratio
and proportion.

***FEATURED TOOL
Construct a 45 degree angle with compass and straightedge
Math Open Reference - John Page
http://mathforum.org/mathtools/tool/28935/
An interactive applet and associated web page that show
how to construct a 45 degree angle with a compass and
straightedge. The animation can be single-stepped or run
as a continuous movie.

***FEATURED ACTIVITY
Worksheet - Perpendicular Line Bisector
Math Open Reference - John Page
http://mathforum.org/mathtools/activity/28857/
A printable worksheet with 3 related problems to practice
how to bisect a line using only a compass and straightedge.
Suitable for class handout or homework.

***FEATURED DISCUSSION
How to disconnect a piecewise graph
Betty14 asks, "How should I format the graph calculator
(TI-83/83+/84+) in order to obtain a disconnected graph
instead of getting a connecting graph throughout the
domain of the function?"

***FEATURED DISCUSSION
Aldana thinks out loud that "... presenting an interactive
graph of two lines that represent displacement of two
objects (runner) as time changes will open ... discussion
and ... presentation of the following topics...."

***FEATURED DISCUSSION
Linear Lasers/Using Math Tools
TAR states, "I know you can tell if they cost money, but
wonder if there is a way to alert browsers that registration
is required. Because of the volume of sites, I began looking
at the ones that had been rated."

CHECK OUT THE MATH TOOLS SITE:

Math Tools  http://mathforum.org/mathtools/
Register  http://mathforum.org/mathtools/register.html
Discussions  http://mathforum.org/mathtools/discuss.html
Research Area  http://mathforum.org/mathtools/research/
Developers Area  http://mathforum.org/mathtools/developers/

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The Math Forum @ Drexel -- 3 February 2007```