picture exchange communication system (PECS)

can be used to support functional communication in children with a range of communication difficulties.

Pyramid education describe it as followsThe Pyramid Approach to Education is a comprehensive framework for establishing and supporting effective learning environments … based on the principles of functional applied behaviour analysis (ABA), the Pyramid Approach offers a solid foundation for those who teach in education, work, home or community settings.

More information can be found on their website here