Fourteen is showing the Numberblocks how to somersault and take numbers away. Thirteen is learning to jump and take away some blocks. What's left?

The toys in Numberblock Five's new toy library are all mixed up! How can Numberblock Two find something to play with? Luckily, their new friend, Sorty the Super Sorter, helps them discover that toys can be sorted by type, colour, shape and size. It's easy to see them all and find the perfect toy when they are sorted neatly into categories.