The socio-epistemic and cognitive relativity of meanings, when they are understood as systems of practices, and their use in the didactical analysis lead to introducing a basic typology of meanings. Regarding institutional meanings we distinguish the following types:
• Implemented: the system of practices that a teacher effectively implements in a specific teaching experience.
• Assessed: the system of practices that a teacher uses to assess his/her students’ learning.
• Intended: the system of practices included in the planning of the study process.
• Referential: the system of practices used as reference to elaborate the intended meaning, for example, that included in curricular documents. In a particular teaching experience the reference meaning
will be part of a more global or holistic meaning, whose determination requires carrying out a historical and epistemological study to find the origin and evolution of the object.