Here’s a simple triplet rolls exercise that I learned from several different teachers many years ago. Check out the video below for some variations that can help improve your sound quality and rhythmic consistency, and click here for printable sheet music.
Bucket Game - Splits Exercise for 2 Drummers
Here is a simple exercise called Bucket Game. It is primarily used by marching bass drummers to practice splitting rhythms between two people, but can be a good practice tool for any percussionist. I recommend starting with the top part, and practicing two bars at a time with the metronome. Once you have mastered A to B on the top part, try the bottom part two bars at a time (still with the metronome). Then find a buddy and have them do the same thing, and eventually split the rhythms. Once you both master both parts from A to B, move on to the next section.
Free PDF and video: