This problem can be very engaging. It has the ability to introduce pupils to some logical reasoning as well as being solvable by trial and improvement.

You could put the eight cubes together to make a large cube without there being one of each colour on each face. Invite children to talk about what they see and then introduce them to the challenge.

How are you trying to solve this?

Have you checked each face has one of each colour cube?

Having a collection of coloured cubes available will help all children have a go at this problem.