When educators refer to the "24 work" or 24 worksheets within the preparatory level, they are usually looking at the core technical and theoretical tasks that bridge the gap between the first and second volumes of the series. These sheets typically cover:
Esercizi mirati per l'articolazione delle dita senza affaticare la mano. musigatto livello preparatorio pdf 24 work
You've got a very specific topic there!