Nathan Shields
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175 followers
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Impossible Freecell deal?
The solitaire card game FreeCell distinguishes itself by having all the cards dealt face-up and having nearly all deals result in solvable games.  If you don't know how to play, you should learn . Each deal (of which there are 52! or about 10^68) gives you ...
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Flash cards
Here are some free printable math facts flash cards for elementary level: addition facts and multiplication facts through 12s.  I've been trying to go through some of them most days with my kids. I put them into a "slow pile" and a "fast pile" as we go, to ...
Flash cards
10minutemath.com
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Into the vortex
I jotted down an idea for a little computer program the other day:   You put a few random points on the screen.  Call these the "centers."  Now these centers determine a slope field: any other point on the screen is assigned a particular slope based on it...
Into the vortex
10minutemath.com
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Ghostbusters Twinkie math
Watching the original Ghostbusters movie the other day, I perked up when Egon said "Let's say this Twinkie represents the normal amount of psychokinetic
energy in the New York area. According to this morning's sample, it
would be a Twinkie 35 feet long, w...
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Hungarian Children's Songs
Here is Nada Radulovich performing Hungarian Children's Songs. From Ms. Radulovich: In this collection, 'Hungarian Children's Songs', Halsey Stevens
skillfully set 6 melodies chosen from a large collection of children's
game songs (Gyermekjátékok) edited ...
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Fractal friends
I was working on a program to make branching curlicue designs, when my kids came in and asked how the pictures were made.  I explained that the computer follows directions based on the numbers you give it.  I changed the maximum angle that the curls could b...
Fractal friends
10minutemath.com
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Nelson's MagicTile
Magic Tile is a free program (possibly for Windows only) that provides a large number of Rubik's cube variations in different geometries.  Some of them are much simpler to solve than others, and viewing the different projections is fun in itself.
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Slopefield face
What if you took a picture and used the brightness of each pixel to determine
the angle that a little agent (a black dot) would travel?  Agents are placed at random on the image, then
follow their paths until they go off-screen. Above, black pixels equate...
Slopefield face
10minutemath.com
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