Study aids (5)
I believe the answer is:
notes
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">study aids</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for notes that I've seen before include "Recorded summaries" , "Jots down" , "Sounds" , "Observes; short comments" , "Cash" .)