How can I effectively practice and master the 3 over 4 polyrhythm?

To effectively practice and master the 3 over 4 polyrhythm, start by understanding the individual rhythms of 3 beats and 4 beats separately. Then, practice playing them simultaneously, focusing on keeping each rhythm distinct. Use a metronome to help you stay on beat and gradually increase the tempo as you improve. Consistent practice and patience are key to mastering this complex rhythm.