300-piece jigsaw and a fact book about atoms and molecules, in a sturdy box. Marvel at the mind-boggling world of atoms and molecules - the building blocks of EVERYTHING everywhere (including you) - in this entertaining book and 300-piece jigsaw set. Find out what atoms and molecules are, where they come from, how they behave and how they are displayed in the Periodic Table. Then explore further with links to activities and videos on specially selected websites. Completed size of jigsaw: 59cm x 40cm