Tom, my cello student, flunked pre-algebra in eighth grade and so had to repeat it the next year. In the summer between, I taught him to daydream in his cello lessons, and also his practicing. This was a technique for releasing his right brain.
When his cello playing improved I wasn’t too surprised, because music-making engages the imagination as well as our emotions. Intuition, another right-brain ability, kicked in as soon as school started, and he began passing math.