The History module is now in two files: History, and TTTWithHistory. The History module contains just the History material. The TTTWithHistory file imports both TicTacToe and History and plays TicTacToe with a history capability. This should make it easier to understand the code. Even so I've extended the due dates of all three TicTacToe projects as well as projects 8 and 9. If you already have credit for project 7a (which is now due this week), you don't have to explain it again. If you don't already have credit please use the current version of that module when you explain it.  As part of your explanation, include input and output examples for both play r c and placeMark r c. If you have an A- for project 7a you can make it an A by explaining it this week with the current code and input/output examples. 

No. Sorry. But see below.