Jake doesn't understand big and small, so the Tweenies try to help him. Max and Judy explain that lots of small things added together can sometimes make one big thing. Lots of blades of grass make a field, lots of grains of sand make a beach, lots of bricks make a house. Then Max and Judy suggest a huge messy time game where the Tweenies make a picture. Bella, Milo, Fizz and Jake all have small pieces of coloured paper they have to stick in particular places. Amazed by the result, the Tweenies see how important small things are.