Best content in Hawken Math

Chris Harrow on 13 Dec 14

Read the 2 comments at the bottom of the post. Brilliant and spot-on 2nd comment.

<div class="cArrow"> </div><div class="cContentInner">Read the 2 comments at the bottom of the post. Brilliant and spot-on 2nd comment.</div>

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Math Craft Inspiration of the Week: Marble Binary Calculators & Other Mechani... - 0 views

mathcraft.wonderhowto.com/...r-mechanical-computers-0131390

youtube binary physical calculator

shared by Chris Harrow on 12 Dec 14 - No Cached

One-Piece Origami Octahedron - YouTube - 2 views

www.youtube.com/watch

octahedron origami

shared by Chris Harrow on 11 Dec 14 - No Cached

How to fold an origami modular Dodecahedron - YouTube - 0 views

www.youtube.com/watch

origami modular dodecahedron

shared by Chris Harrow on 08 Dec 14 - No Cached

Using our Zometool set to help with a challenging AMC 10 problem | - 0 views

mikesmathpage.wordpress.com/...h-a-challenging-amc-10-problem

zometool zome geometry cube octahedron

shared by Chris Harrow on 03 Dec 14 - No Cached

Origami Bascetta Star by Paolo Bascetta (Folding Instructions) - YouTube - 0 views

www.youtube.com/watch

origami star youtube

shared by Chris Harrow on 01 Dec 14 - No Cached

Origami 8 point star by Robert Neale - YouTube - 0 views

www.youtube.com/watch

origami ninja star youtube

shared by Chris Harrow on 01 Dec 14 - No Cached

Chris Harrow on 01 Dec 14

for 4-5 math club

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The Trouble With Bright Girls | Psychology Today - 0 views

www.psychologytoday.com/...the-trouble-bright-girls

Dweck psychology gender mindset

shared by Chris Harrow on 25 Nov 14 - No Cached

This Teacher Taught His Class A Powerful Lesson About Privilege - 0 views

www.buzzfeed.com/...a-powerful-lesson-about-privil

pedagogy privilege

shared by Chris Harrow on 24 Nov 14 - No Cached

Styrofoam Cup Problem - 0 views

www.estimation180.com/styrofoamcups.html

pedagogy technology videos

shared by bmalin on 14 Nov 14 - No Cached

bmalin on 14 Nov 14

I'm at NCTM and a presenter used his video to present a lesson. Very cool stuff!

<div class="cArrow"> </div><div class="cContentInner">I'm at NCTM and a presenter used his video to present a lesson. Very cool stuff!</div>

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bmalin on 14 Nov 14

The presenter was Eric Milou, here is his powerpoint http://tinyurl.com/NCTM14milou

<div class="cArrow"> </div><div class="cContentInner">The presenter was Eric Milou, here is his powerpoint <a href="http://tinyurl.com/NCTM14milou" rel="nofollow" target="_blank">http://tinyurl.com/NCTM14milou</a></div>

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Cyclic fractions | John D. Cook - 1 views

www.johndcook.com/...cyclic-fractions

fractions cyclic

shared by Chris Harrow on 13 Nov 14 - No Cached

Chris Harrow on 13 Nov 14

Another math boundary...

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Magic Square -- from Wolfram MathWorld - 0 views

mathworld.wolfram.com/MagicSquare.html

Proof uniqueness

shared by Chris Harrow on 12 Nov 14 - Cached

Chris Harrow on 12 Nov 14

Number of unique magic squares. >There is (1) 1x1 square--duh. >Interesting that there are (0) 2x2 squares. Place any number in any corner--both adjacent corners must be the same number, preventing a square. Can a 5th grader follow this? >There is (1) 3x3 square. Can be reasoned out by cases. Can 5th grader follow? >There are (880) unique 4x4 squares. Very interesting that this number jumps so quickly. >Stunning: There are (275,305,224) unique 5x5 squares. WOW! >>We don't know how many 6x6 squares there are.

<div class="cArrow"> </div><div class="cContentInner">Number of unique magic squares. >There is (1) 1x1 square--duh. >Interesting that there are (0) 2x2 squares. Place any number in any corner--both adjacent corners must be the same number, preventing a square. Can a 5th grader follow this? >There is (1) 3x3 square. Can be reasoned out by cases. Can 5th grader follow? >There are (880) unique 4x4 squares. Very interesting that this number jumps so quickly. >Stunning: There are (275,305,224) unique 5x5 squares. WOW! >>We don't know how many 6x6 squares there are. </div>

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