A data model explicitly determines the structure of data. Data models are specified in a data modeling notation, which is often graphical in form. A data model can be sometimes referred to as a data structure, especially in the context of programming languages. Data models are often complemented by function models, especially in the context of enterprise models.
The Association Montessori Internationale (AMI), founded by Maria Montessori in 1929, maintains Montessori educational principles and disseminates Montessori education throughout the world.
She wrote that education should  help the individual from birth and protect his environment. From this crucial idea the whole of Montessori's theory, her recommendation for educational practice including the organisation of the environment, the curriculum and the important role of the educator, have developed. The Montessori Method is an approach to education used predominantly in the pre-school field.