I pulled out the 3-D tic tac toe frame again. Our frame has three layers of wood with indents to hold marbles. The kids and I played with it in a couple of ways. We played the game, but then we made patterns with the different colored marbles on it. I pulled out some paper and we experimented with drawing the board.

My six year old started by drawing the frame, but then switched to drawing the three separate platforms side by side. He made a couple of different patterns. The one I’m showing here involves a blue triangle being filled different ways, with two white marbles next to it, and on the side a diagonal line of white marbles.

I experimented with cubes. What if we thought of the marbles as cubes stacked together to make a larger cube? (Empty holes become a third color of cube, a placeholder.)

If we think of the marbles as representing points on a cube, then a marble could be placed on a vertice, the center of an edge, the center of a face or the center of the cube itself. There are really only four opening moves for 3D tic tac toe (up from three opening moves in the 2D version), and the number of lines which could potentially be made with that marble can be mapped out – easily seen but a challenge for me to draw.

I don’t have a picture of it, but my nine year old got into trying to slice the cube apart through lines that joined three blue marbles together. It was one of those odd days where we all found our own ways of exploring the spatial relationships in different ways.

2 Comments

• Bekki @ a better way to homeschool

I LOVE your 3D tic tac toe! It is a beautiful set. Playing special games like tic tac toe and chess do incredible things to a child’s ability to think critically!!

• Christine M. (Cool Mom) - Tech Support for Stanley & Katrina

Well this 3-D tic tac toe is blowing my mind. Ha! Love it. Thanks for co-hosting the Homeschooling Link-Up this week. StanleyNKatrina are now following you on Twitter. Happy Homeschooling to you!

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