Reflecting on the purpose of theory

Learning theories should offer some insight into learning.
For those new to teaching the plethora of view points is somewhat confusing and can get in the way rather than assist understanding.
When I taught science I saw that my task was to uncover meaning that enabled students to build there own understanding.
How to do this with learning theories?
For those I work with I see my task is to provide a practical framework that enables them to create coherent engaging lessons for their students in a wide range of practical areas