Ella (Wesley College Prep School, Melbourne Australia) and Kristian (Even Swindon Junior School UK) sent in a correct solution each. Christina (Malborough Primary School) found four solutions and said that there were more.
The team from The Mount School, York UK sent in loads! Well done Kate, Katherine, Laura, Dominica, Stephanie and Katherine B (and an older pupil who acted as graphic artist!).
These 8 have 7 on one side and 3 on the other.
This 10 have 6 on one side and 4 on the other.
These 8 have 5 on each side.
We found 26 ways of doing this altogether and can't find any more.