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Date:      Wed, 22 May 2013 16:05:07 -0400
From:      "Larry Shiller" <>
To:        <>
Subject:   Your May 2013 ShillerMath Tidbit
Message-ID:  <>

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Your May 2013 ShillerMath Tidbit by Larry=0AShiller [http://www.icontact-ar=][
pSnK7EpoqgJj2XwinVW012kS5zF8k7?w=3D4#linkedinshare]=0A=0ABringing the bling=
 to math=0A=0ANot all manipulatives are created equal=0A=0AUniversity of No=
tre Dame Associate Professor of Psychology Nicole McNeil studies=0Ahow chil=
dren learn (or don't learn) math. She just came up with some fascinating=0A=
results that have repercussions for parents who want their preschoolers to =
learn=0A- and love - math.=0A=0AManipulatives work - but only when they are=
 unfamiliar to the child. When=0Achildren know a manipulative and its purpo=
se, they focus on that - and not on=0Aits alternative purpose in helping to=
 learn math.=0A=0AWhen a child doesn't know a manipulative, what the author=
s call "perceptual=0Arichness" takes place - a good thing because it brings=
 more parts of the brain=0Ato bear on the mathematical concept and not on a=
ny pre-conceived notion of what=0Athe manipulative normally does.=0A=0AIn o=
ther words, when it comes to preschooler math manipulatives, don't use that=
=0Athing if it don't have that bling.=0A=0AFunny bone=0A=0AThey said it=0A=
=0AIt's a lot of bling to play with. You got to have the bling. Serena Will=
iams=0A=0AWhen girls are asking themselves "Who am I?" for the first time a=
nd they hear=0Aall this bad PR about math, they think, "Well, whoever I am,=
 I'm not somebody=0Awho likes math." Danica McKellar=0A=0AMath: The only pl=
ace where a person can buy 80 watermelons without anyone=0Athinking they're=
 a weirdo. Anonymous=0A=0ABrain booster=0A=0AMay 2013 Puzzler [Grades 4-8]=
=0A=0ASay you divide a circle into many equal parts by drawing line segment=
s from the=0Acenter to points on the circle. If no two line segments form a=
 diameter, what=0Acan you say about the number of parts?=0A=0AProvide the c=
orrect answer by May 25, 2013 to be this month's puzzler winner.=0A=0AAnswe=
r to previous Puzzler [Grades 10-12]=0A=0AWhy is it true that a number whos=
e digits sum to a multiple of 3 will also be=0Adivisible by 3 (and vice ver=
sa)?=0A=0ASolution:  Here's a proof for 3-digit whole numbers, which can be=
 generalized to=0Awhole numbers of any size:=0A=0AThe number abc may be rep=
resented as 100*a + 10*b +1*c. For example 485 is 100*4=0A+ 10*8 + 1*5. But=
 100*a + 10*b + 1*c is the same as (99+1)*a + (9+1)*b +=0A(0+1)*c, which is=
 99a + 9b + (a+b+c).=0A=0A99a + 9b is always multiple of 3. So if a+b+c is =
a multiple of 3, abc is a=0Amultiple of 3 and otherwise not; and if abc is =
a multiple of 3, so is a+b+c and=0Aotherwise not.=0A=0AI hope you enjoyed t=
his short math break.=0A=0ASincerely,=0ALarry Shiller=0ALarry Shiller=0A=0A=
Publisher=0A=0AMay special: Save $25 on any kit and get free shipping anywh=
ere. Use promo code=0AKITSAVE25. Expires May 31, 2013. Only at [1]shillerma= may republish this Tidbit to your readers, subscribers, PT=
A/PTO/homeschool=0Agroup and association members, and fellow parents and ed=
ucators at no charge. If=0Ayou reprint this Tidbit in a newspaper we just a=
sk that you send or email us a=0Acopy (PDF is OK).=0A=0A[2]Answer the puzzl=
er!=0A=0A[3]Please like us on Facebook=0A=0A=C2=A9 Larry Shiller. All Right=
s Reserved.=0A=0AReferences=0A=0A1. http:/=
=0A=0AThis message was sent to from:
ShillerMath | 258 Thunder Lake Road | Wilton, CT 06897=0A=0AManage Your Subscription:=0A To a Friend: =0A

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