Answer:
Fleming's left hand rule for motors is a visual depiction used to determine direction of rotation in a motor.
Extend your thumb, index finger and middle finger of your left hand at right angles to each other.
The thumb represents direction of relative motion.
The index finger represents direction of flux (magnetic field).
The middle finger represents direction of current flow.
A simple way of remembering what each digit represent is the phrase: "Martha's Fresh Cookies." M being motion, F being flux and C being current.
Fleming's Right hand rule for generators is the same except you use your right hand and it applies to direction of rotation of generators.