Before expecting them to be independent at this I demonstrate with a sort of silent practice "think aloud". I want them to get used to thinking of their recorder method book as a non-fiction text. Before setting them loose, I make sure thry know where to find the places in the book where certain rhythms are introduced as well as where their note name chart and fingering chart exist.
Ocassionally I take grades on how they practice. Even when we practice "outloud" we refer to the chart