Five Triangles: 209. Number squares - 0 views
Five Triangles: 208. Sixty second parallelogram - 0 views
Times When I Suck | Number Loving Beagle - 0 views
Building a better shapes book | Talking Math with Your Kids - 2 views
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Brilliant! Share with EVERY child!!!
Plaited Origami Polyhedra - 0 views
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More ideas for origami!
https://dl.dropboxusercontent.com/u/47041687/Which%20One%20Doesnt%20Belong.pdf - 0 views
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The BEST shapes book EVER
Fibonacci Zoetrope Sculptures on Vimeo - 0 views
A little Zome geometry in our new house | - 0 views
Two and Two : nrich.maths.org - 2 views
Five Triangles: 42. Hyperbola - 0 views
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Read the 2 comments at the bottom of the post. Brilliant and spot-on 2nd comment.
Math Craft Inspiration of the Week: Marble Binary Calculators & Other Mechani... - 0 views
One-Piece Origami Octahedron - YouTube - 2 views
PIC-magic-squares.png (200×200) - 0 views
magic1.gif (110×107) - 0 views
Magic Square -- from Wolfram MathWorld - 0 views
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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.