To find games that are iPad compatible, simply type the keyword "iPad" into the search bar.
You can also search for content by keyword, topic, or standard and then select the Game Features filter to only see iPad-compatible games.
Also, every game tile will provide you with additional information related to the selected game. Look for the iPad icon on the game tile to ensure you are assigning a game that is iPad compatible.
Here is an article that will provide you with information about overall iPad compatibility.