Lawrence Stenhouse (1975) produced one of the best-known explorations of a process model of curriculum theory and practice. He defined curriculum tentatively: "A curriculum is an attempt to communicate the essential principles and features of an educational proposal in such a form that it is open to critical scrutiny and capable of effective translation into practice."
He suggests that a curriculum is rather like a recipe in cookery. A curriculum, like the recipe for a dish, is first imagined as a possibility, then the subject of experiment. The recipe offered publicly is in a sense a report on the experiment. Similarly, a curriculum should be grounded in practice. It is an attempt to describe the work observed in classrooms. Finally, within limits, a recipe can be varied according to taste - so can a curriculum.