How do students access feedback on file upload portions of quizzes?

Community Explorer

I used the quiz feature to give my students an exam. The first half of the exam was objective (T/F, fill in the blank, etc). The second half was file uploads. They uploaded pdf files. I went to Speed Grader and  then marked  their responses on an iPad using a Logitech Crayon. The notations I made are showing up on my teacher page. However, my students cannot see the notations on their individual pages.  

How can they access my annotations so they can have the feedback on the exam? 

Thanks for your help!