I agree with Mr. Goertzen that it is important to help students in such a way that you are guiding them to independence. I think that responding to students’ questions with more questions to help them think for themselves is an excellent way to go about it. Often, when students say that they don’t know how to do something, the 1st thing I do is ask them to read the question or the directions out loud to me. It is amazing how often they are able to answer their own questions.
It seems to me that if your student is able to complete the daily assignment reasonably well on her own, but isn’t able to do the same level of work on the test, then there must be something that is getting in the way.
These are the questions that I would ask next:
1. Is there some testing anxiety going on? Is your student freezing up when she gets to a test? Would there be ways to help her think of a test as an opportunity to show what she knows vs. something to be afraid of? I have found it very helpful to explicitly teach students how to take tests or how to approach certain types of questions.
2. How does the format of your daily lesson assignments compare to the test? Might the formatting on the test be tripping her up? Is she actually reading the directions or the word problems or just skimming over them because she thinks she knows what to do?
Just some ideas…