The home page of Thinkscape displays an icon for each course you’re enrolled in. If your hover your mouse over an icon, it will display how many of those labs have been completed and how many have been marked.
If you click on a course it will take you to a list of labs within the course. If you hover over these icons they will display if the lab has been started and give you the option to delete your progress or to view a submitted report. If a lab has been started, the top right corner of the lab icon will turn red. When a lab has been completed, it will turn green.
To open up a lab, click on its icon.