Episodic Memory is based on experiences, events, memories in context. It has unlimited capacity, forms quickly and requires no practice. Recall is triggered by contextual cues such as location and emotions. Too often we attempt to teach mathematics using only techniques to develop reflexive or semantic memory. Failures of recall often lead to Math Anxiety .
Successful retrieval leads to the pleasure of learning and confident, active students.
The book Teaching with the Brain in Mind by Eric Jensen provides a good summary of recent research. A full list of References websites on the brain and learning.