The Puzzle of the Oceans (G 007) isolates the world's five oceans as individual wooden pieces, offering children a focused material for learning ocean names, locations, and boundaries distinct from continent work. It fits naturally into the primary and early lower elementary geography sequence, particularly when children are exploring land and water forms and beginning to distinguish physical from political geography. Many guides find it a useful complement to the World puzzle, giving children a way to revisit the globe's water coverage as a subject in its own right.