The Montessori Curriculum is an integrated thematic approach that ties together separate disciplines into studies of the physical universe, the world of nature, and the human experience. In this way, one lesson leads to many others.
Each material isolates one concept or skill that has been specially designed so children are naturally drawn to work with it. Each material has also been designed so a child can check his own work – what Montessori calls "control of error." These are tools that lead to independence, and that let children see abstract ideas presented in concrete, three-dimensional ways.
The tools also help them grasp and understand what they are working on, and allow each child to work at their own pace.