Gradebook makes it easy to award extra credit. This video will explain how. 

• Open the Gradebook tool in your course
• Select Add Gradebook Item
• Enter the Title of the Gradebook item
• Enter the Point value
• Select the Extra Credit Check Box
• Enter the Due Date by selecting the small calendar icon (optional)
• If you are using Gradebook Categories or Weighted Categories, select the Category from the drop-down menu
• Make sure the Release item to students and Include item in course grade calculations check boxes are selected
• Click Create

Note: when entering grades for students who complete the extra credit, leave the grade blank for students who do not. DO NOT ENTER A ZERO.

The video below (1:16) demonstrates how to add an extra credit item to your gradebook.