Every home has them, but a great deal goes into their design, production and assembly than is immediately apparent. The processes and materials used are mixed, from the boards and boxes to the numbered cubes, counters, flashcards, flipcharts, magnets, pencils, rulers and other elements that may form the individual parts of the whole product. Delivery schedules and production quality need to be carefully controlled and coordinated to ensure that all the various components are delivered to the assembly point at the same time and in the correct quantities.