Retakes are essentially do-overs. You have 5 retakes per class to use on any activity you would like. The only exception is the final exam. No retakes are allowed on the final exam. You can use 5 retakes on one activity or 5 separate activities. Once you begin the final exam, you forfeit any unused retakes.
You will access your retakes from the student portal. The portal also tracks how many retakes you have used and how many you have remaining.
Watch the video on "Retakes" for more detailed information.