Students, you know how important it is to practice regularly.  But what do you do if you are away from home?  You may have heard jokes about playing "air" guitar.  Well, it turns out that it's not such a joke.  Scientific studies have shown that just imagining you are practicing can result in almost as much improvement as real practicing.  Piano players can make imagining easier by printing this paper keyboard.  You can print several copies and take them together to make a longer keyboard.  You will need seven copies if you want a full-length piano.