With plastic tiles: Skill Level: * How to play: remove the 12 pieces from the cube core, and now try to put them all back on. As an educational toy for children:
1. Start from combining the last two pieces.
2. Combine the last 2 or more neighboring pieces
3. Combine all 12 pieces
Two Tetrix cubes have 10 different combinations by exchanging certain pieces.
4. One Tetrix cube has 4 combinations. Two Tetrix cubes have 10 different combinations by exchanging certain pieces.
5. You can stick the 2 inner cubes together to make one rectangular cube, then combine the puzzle pieces for a more difficult challenge.