When the assignment is due or added, students get a notification of it.
If they submit an assignment, the teacher gets and e-mail notification.
The multiple choice questions and fill-in blanks are automatically corrected by the system based on the predefined answers, however in case of the open questions the teacher has to grade the answer from 0 to 5.
To do this evaluation, you should click on the assignment to see the students and the questions, by clicking Grading under the Open Ended tab you can read and grade the answer.
By choosing the Grouped by questions tab you can see which student is not graded yet and what their answers were (see the screenshot below).