What part of a textbook should you use to search for information?
5th grade student is looking for african mammal in his text book .
To better search what part of book he should go first.
If these are the two choices, then of course this student should go to the index and not to the glossary. The glossary is not really going to help him find out very much at all.
The glossary only gives definitions for various words in a book. In this case, the student might be able to find out what a mammal is from the glossary.
However, if the student wants to know about mammals in Africa specifically, the glossary will not do much good. He will need to look in the index under mammals and then Africa or he might try Africa and then mammals (if the index has subheadings). Anyway, the index will show him where to find information about Africa and/or mammals. The glossary will not.
You should go to the glossary first! If you still can't find anything you should go to the index, (You will find something though)