diff --git a/notes.md b/notes.md
index 67cc9f6..3750dca 100644
--- a/notes.md
+++ b/notes.md
@@ -6,13 +6,16 @@ Which class is responsible for each of the following behaviors?
 For each, explain how the behavior is accomplished.
 
 ### Checking to see whether the game is over
+TTTGame. TTTGame.is_over checks to see if one of the following is true: 1) the board is full, 2) X is in a winning state, or 3) O is in a winning state.
 
 ### Determining which actions are available at a particular state
+TTTGame. TTTGame.get_actions checks each location on the board to see if it has been filled with an X or an O and returns the indices of each location that has neither.
 
 ### Showing the board
+TTTView. TTTView.print_board prints the state of the first three locations on the board, a divider, the state of the second three locations, another divider, and the state of the final three locations.
 
 ### Choosing which action to play on a turn
-
+TTTHumanPlayer or TTTComputerPlayer. TTTHumanPlayer.choose_action gets the possible actions that can be done and allows the user to pick one. TTTComputerPlayer chooses an action based on the strategy the computer is using.
 
 ## Checkpoint 2 Notes