In 2017 I wrote a post about a 3-Dimensional Tic-Tac-Toe board I had made, and summarized how I had built it. This is a great activity for developing spatial awareness in children. I recently opened a Math Things store on Etsy and began making these for sale.
The Os are wood spheres, flattened so they don't roll. The Xs are simple children's jacks. There are two different boards: a 3 by 3 by 3, and a 4 by 4 by 4.
The 4 by 4 by 4 is more challenging and makes for a much longer game. The 3 by 3 by 3 requires rule changes to be competitive.
Here is a link to my Etsy store.
https://www.etsy.com/shop/3DMathThings?ref=seller-platform-mcnav
You can download the rules for both boards here.
And you can download a detailed set of instructions for playing the games remotely.
