This exercise was created to support the learning of playing paradiddles with accents along with a metronome at 70bpm in the Grade 2 Rockschool technical exercises 2012-18 syllabus. I have also suggested to try practicing the sheet between 60 and 120bpm, with or without a metronome. 75-120bpm would be pushing the ability level up to at least Grade 3-4.
It can be hard to play paradiddles with a metronome at first, and if you haven’t worked with a click much before it’s also hard for 16th notes and 8th notes. This exercises works on playing 16th notes with a right, left, right, left sticking to get used to this. Then when you take away the left hand, you are left with right hand 8th notes, which is why they are the foundation of this exercise (first and 3rd line).
On the second line, the R L R L sticking on the 16ths prepares the drummer for the transition to 16ths from 8th notes before going from 8ths to paradiddle 16th notes in line 4. Then with the repeat the first 2 lines are there to settle in to the transitions again. By the end of the exercise the paradiddles exercise should become much easier. The actual grade 2 drums rockschool technical exercise is line 4 played twice.