You can add columns to Grades manually to add grades for classroom activities such as midterms or quizzes. To add a new column (grade item),you may follow these steps:
At the course page, click "Grades" option from the Course Administration.
Click "Categories and Items" link under "Setup" block.
Scroll to the bottom of the page and click "Add grade item" button. The New grade item page will open.
Enter an "Item name" (for example: Midterm 1).
Enter the "Maximum grade" value for this grade. Maximum grade depends on the aggregation method. For more information about aggregation methods please visit: "What is aggregation" FAQ entry.
Click "Save changes" button.
After adding a new grade item, you can follow these steps to manually enter grades:
Click "View" tab to return to "Grader Report" where you will find the list of enrolled students.
Click "Turn editing on" button. Grade cells will change to entry fields.
Enter the grades to the fields.
When you finish entering grades, scroll to the bottom of the page and click "Save Changes" button. Otherwise, all the grades you entered will disappear.