I'm completely new to keyboard mallet percussion and, for now, working without a teacher. I'm going through basic exercises such as those in G. H. Green's Instruction Course for Xylophone. I'm not certain how to interpret hand notation on the very first exercises on pp. 6 & 7; e.g., is Exercise #9 to be played with the right hand only? Similarly with this selection where the notation switches from alternate to just notating one hand:
I suppose this should be head-slappingly obvious but as a beginner I don't want to head down the wrong path by practicing incorrectly since most sticking direction strongly emphasizes alternating hands.
