The trinomial cube is similar to the binomial cube, but has the following pieces instead:
- 1 red cube and 6 black and red prisms (varying in size)
- 1 blue cube and 6 black and blue prisms (varying in size)
- 1 yellow cube and 6 black and yellow prisms (varying in size)
- 6 black prisms (same size)
This is similar to the binomial cube, but is a physical representation of this formula:

• Dimensions: 14 x 14 x 10 cm• Recommended Ages: 3.5 years and up