Now, it's time to provide students with the clues for the puzzle:

• Click cell A3, click Insert in the menu bar, and select Comment.
• In the sticky note that appears, type the clue, "Who was the first U.S. president?" Hit Enter.
• Click cell D2, go to Insert>Comment, and type "What is the official residence of the U.S. president?"
  
  
  
• Click cell B3, go to Insert>Comment, and type "Who was the second U.S. president?"
• Save your work.