The field of early education is broad and evolves in accordance with many factors including cultural influences, technological innovations, and emerging science that informs new research based practices.
Early education programs can vary widely based on the design of the programs which are formulated by three main foundations of knowledge and practice: theory, pedagogy, and curriculum. These foundations are both distinctive and integrative. Below is a diagram that is my humble attempt to show the most simplified way of understanding how these three foundations function together.

Education, like human development, is not rigidly structured. Instead, it is transitionary, evolving on a spectrum as new skills and knowledge are gained and integrated. So while the diagram is seeking to make clear distinctions between each foundation, it’s important to acknowledge that theory, pedagogy, and curriculum work together in a highly fluid way to create an environment and foster the conditions necessary for dynamic learning and development to occur.