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Newsletter: Math Forum Internet News No. 16.12 (25 Mar 11)
Posted: Mar 25, 2011 1:20 PM

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25 March, 2011 Vol. 16, No. 12

THE MATH FORUM @ DREXEL INTERNET NEWS

Win an iPad at the Math Forum's NCSM Booth
Math Forum Course: Financial Education in the Math Classroom
Radiation Dose Chart

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WIN AN iPAD AT THE MATH FORUM'S NCSM BOOTH

http://mathforum.org/workshops/nctm2011/index.ncsm.html

Visit the Math Forum at Booth 512 in the Sponsor Partners
Display Area of the National Council of Supervisors of
Mathematics annual conference in Indianapolis. Fill out a survey
to help us provide you and your teachers better professional
development and services -- and for a chance to win an iPad.

Special for NCSM attendees: Enter our raffle for Math Forum
Prize Packs. Talk to us about an opportunity to apply for free
Problems of the Week Memberships with a minimum number of paid
registrations in our online professional development course
designed to help teachers make the most of the membership.

-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-

PoW taking place: math problem-solving moment of the week

"A neat thing about Skitch's method is his 'guess' is the same
as Jack's variable 'p,' so you can see some ways that the guess
and check method includes the same calculations as the algebra
method. But here are some other suggestions, from
other students...."

- Max and Suzanne, commenting on the Pre-Algebra PoW's
Latest Solution

http://mathforum.org/pows/solution.htm?publication=3919

-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-

MATH FORUM ONLINE COURSE
FINANCIAL EDUCATION IN THE MATH CLASSROOM

http://mathforum.org/fe/courses/

Drawing on Math Forum resources and expertise, participants in
this course will engage with problem solving, software, and
technology tools as they explore financial education content
and teaching strategies.

This course, organized into three 2-week modules on the
BlackBoard course platform, runs April 7 - May 19. Assignments
will be given with deadlines, but participation will
be asynchronous.

Register now:

http://mathforum.org/pd/fe/apply.html

This program is made possible by a generous grant from the
FINRA Investor Education Foundation.

-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-

Now taking place: math education conversation of the hour

"This is the way homework goes every week -- I have to work to
undo the formulaic thinking she's been taught, help her to
understand why she'd doing what she's doing, and then we have
to 'package' it very carefully to be sure the teacher does not
penalize her for any creativity or off the page thinking. I
just keep showing her why she's doing things, and we're very
clear on when she's jumping through hoops for the grade vs.
doing something the way it makes sense to her. I try to keep
her motivated to use her reasoning...."

- Julie, posted to the math-learn discussion

http://mathforum.org/kb/message.jspa?messageID=7415359

-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-

RADIATION DOSE CHART

http://xkcd.com/radiation/

By representing sieverts with colored unit squares, this series
of nested charts shows the ionizing radiation

- from eating one banana
- from spending one day in Japan 50km northwest of Fukushima
after the earthquake and tsunami
- from a year of living in a stone, concrete, or
brick building
- considered the lowest one-year dose clearly linked to
increased cancer risk
- from spending an hour on the grounds at the Chernobyl
plant in 2010
- from taking an airplane flight from New York to Los Angeles
- considered the maximum external dose from the Three Mile
Island accident
- established by the Environmental Protection Agency as a
limit for emergency workers in lifesaving operations
- considered fatal
- ... and more

Sources include the Japanese Ministry of Education, Culture,
Sports, Science and Technology; the Idaho National Laboratory;
the U.S. Nuclear Regulatory Commission; and the MIT Department
of Nuclear Science and Engineering.

Randall Munroe, who worked on robots at NASA's Langley Research
Center before creating the webcomic xkcd, made this chart with
help from Ellen McManis, a Senior Reactor Operator at the Reed
Research Reactor. Munroe blogged that McManis

"... has been spending the last few days answering
questions about radiation dosage virtually nonstop
(I've actually seen her interrupt them with
'brb, reactor')."

McManis' own graphical introduction to everyday doses, US
regulatory limits, extreme doses, and the inverse square law
provides further context to the events still unfolding at the
Fukushima nuclear power plant:

http://people.reed.edu/~emcmanis/radiation.html

For a Japanese language translation of Munroe's chart, see

http://gaagle.jp/gagazine/kiji_img/969/houshasenryou2.png

-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-

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The Math Forum @ Drexel ** 25 March 2011

An archive of all the Math Forum newsletters
and directions for subscribing can be found at
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In This Issue





Win an iPad at the Math Forum's NCSM Booth
Math Forum Course: Financial Education in the Math Classroom
Radiation Dose Chart

 


<img src="http://mathforum.org/pd/images/continuum.pd.jpg"; width=45> 

Online PD


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<a href="http://www.drexel.com/online-degrees/education-degrees/cert-mlt/index.aspx">Mathematics Teaching and Learning Certificate</a> 



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If you prefer to receive a text-only version, please send a note to <a href="http://mathforum.org/electronic.newsletter/mfin.faq.html#feedback">the Math Forum Internet Newsletter editors</a> and we will subscribe you to that list. 
You can also subscribe via <a href="http://mathforum.org/kb/rss/rssmessages.jsp?forumID=212">RSS feed</a>.

<hr>



Win an iPad at the Math Forum's NCSM Booth



<a href="http://mathforum.org/workshops/nctm2011/index.ncsm.html">http://mathforum.org/workshops/nctm2011/index.ncsm.html</a>


Visit the Math Forum at Booth 512 in the Sponsor Partners
Display Area of the National Council of Supervisors of
Mathematics annual conference in Indianapolis. Fill out a survey
to help us provide you and your teachers better professional
development and services — and for a chance to win an iPad.


Special for NCSM attendees: Enter our raffle for Math Forum
Prize Packs. Talk to us about an opportunity to apply for free
Problems of the Week Memberships with a minimum number of paid
registrations in our online professional development course
designed to help teachers make the most of the membership.



<hr>


<dl>
<dt>
PoW taking place: math problem-solving moment of the week

<dt>
"A neat thing about Skitch's method is his 'guess' is the same
as Jack's variable 'p,' so you can see some ways that the guess
and check method includes the same calculations as the algebra
method. But here are some other suggestions, from
other students...."
<dd>
- Max and Suzanne, commenting on the Pre-Algebra PoW's
Latest Solution
<dd>
<a href="http://mathforum.org/pows/solution.htm?publication=3919">http://mathforum.org/pows/solution.htm?publication=3919</a>
</dl>


<hr>


Math Forum Course: Financial Education in the Math Classroom

<a href="http://mathforum.org/fe/courses/">http://mathforum.org/fe/courses/</a>


Drawing on Math Forum resources and expertise, participants in
this course will engage with problem solving, software, and
technology tools as they explore financial education content
and teaching strategies.


This course, organized into three 2-week modules on the
BlackBoard course platform, runs April 7 - May 19. Assignments
will be given with deadlines, but participation will
be asynchronous.


Register now:


<a href="http://mathforum.org/pd/fe/apply.html">http://mathforum.org/pd/fe/apply.html</a>


This program is made possible by a generous grant from the
FINRA Investor Education Foundation.



<hr>


<dl>
<dt>
Now taking place: math education conversation of the hour

<dt>
"This is the way homework goes every week -- I have to work to
undo the formulaic thinking she's been taught, help her to
understand why she'd doing what she's doing, and then we have
to 'package' it very carefully to be sure the teacher does not
penalize her for any creativity or off the page thinking. I
just keep showing her why she's doing things, and we're very
clear on when she's jumping through hoops for the grade vs.
doing something the way it makes sense to her. I try to keep
her motivated to use her reasoning...."
<dd>
- Julie, posted to the math-learn discussion
<dd>
<a href="http://mathforum.org/kb/message.jspa?messageID=7415359">http://mathforum.org/kb/message.jspa?messageID=7415359</a>


</dl>
<hr>


Radiation Dose Chart

<a href="http://xkcd.com/radiation/">http://xkcd.com/radiation/</a>


By representing sieverts with colored unit squares, this series
of nested charts shows the ionizing radiation

<ul>
<li>
from eating one banana
</li>
<li>
from spending one day in Japan 50km northwest of Fukushima
after the earthquake and tsunami
</li>
<li>
from a year of living in a stone, concrete, or
brick building
</li>
<li>
considered the lowest one-year dose clearly linked to
increased cancer risk
</li>
<li>
from spending an hour on the grounds at the Chernobyl
plant in 2010
</li>
<li>
from taking an airplane flight from New York to Los Angeles
</li>
<li>
considered the maximum external dose from the Three Mile
Island accident
</li>
<li>
established by the Environmental Protection Agency as a
limit for emergency workers in lifesaving operations
</li>
<li>
considered fatal
</li>
<li>
... and more
</li>
</ul>

Sources include the Japanese Ministry of Education, Culture,
Sports, Science and Technology; the Idaho National Laboratory;
the U.S. Nuclear Regulatory Commission; and the MIT Department
of Nuclear Science and Engineering.


Randall Munroe, who worked on robots at NASA's Langley Research
Center before creating the webcomic xkcd, made this chart with
help from Ellen McManis, a Senior Reactor Operator at the Reed
Research Reactor. Munroe blogged that McManis


<blockquote>
"... has been spending the last few days answering
questions about radiation dosage virtually nonstop
(I've actually seen her interrupt them with
'brb, reactor')."
</blockquote>


McManis' own graphical introduction to everyday doses, US
regulatory limits, extreme doses, and the inverse square law
provides further context to the events still unfolding at the
Fukushima nuclear power plant:


<a href="http://people.reed.edu/~emcmanis/radiation.html">http://people.reed.edu/~emcmanis/radiation.html</a>


For a Japanese language translation of Munroe's chart, see


<a href="http://gaagle.jp/gagazine/kiji_img/969/houshasenryou2.png">http://gaagle.jp/gagazine/kiji_img/969/houshasenryou2.png</a>



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