Hi there,
Here are some ideas:
Use a method book that has several different books. For example, Faber & Faber's lesson and performance books, and their jazz and/or classical supplements which are available for levels from primer on up. (Honestly--I do not work for F&F, but my switch to their method has made a huge difference in the attitudes of my students!)
Now. You have 3 or for 4 different books to work with. This helps with what kids love: choices THEY can make. If you get toward the end of a lesson, say, "We have time for one more song--which book should we take it from?"
Give them more choices. "Would you like to focus on fingering or rhythm this time through this piece?" "What dynamics could we add to make the music more exciting?"
If they really hate one particular piece, don't make them play it. Assure them that there is an endless supply of good music, and as long as they work hard on the other pieces we can skip this particular one. (This can't happen often of course! Make sure they know this is a special case!) My theory is that I need to keep kids' attitudes POSITIVE. And spending 3-4 weeks on a song that does not have 3 weeks worth of educational merit is not keeping anyone positive!
Have a goal setting meeting. Tantalize them by showing them the next level of books and ask when they would like to be that far. If they are getting close to being able to play popular items like Fur Elise or the Linus and Lucy song, Star Wars or Disney, give them your honest opinion on what it will take to get there practice/time wise. i.e. "I think that in 4 months if you practice consistently we may be ready to begin the real version of Fur Elise."
Set a recital goal--or if you only have 1 recital per year, a shorter 5-month goal. Where do they want to be in their books by then? How many songs per week do they want to complete in order to get there? What do they want to be able to play for the recital? Have THEM write these things down during the meeting, in their assignment book, with a colored marker. Then when they start getting antsy, say, "Look--we need to get 4 songs done this week to keep on schedule! We need to focus!!!!" This really works for everyone from 6 year olds on up.
Also--games for the last 5 minutes of the lesson are a hit. The composition and listening games I play are pretty popular.
Composition game: one person plays a note. The other (teacher) plays the first note and adds one of his/her own. Student plays first note, teacher's note, and adds another one of his/her own, and so on, until a mini melody is created.
Listening game: Teacher plays a short and simple 2-measure melody, and the student figures out how to play it back. Teacher tells the student what finger to start with and which note to start on. For the first couple of times, this should be done with student watching what is played. After that, student should look away while melody is played.
Play to motivate students--and to show them what the song should sound like. Music is an aural art and students should have an idea of what they are aiming for. But, as one student put it, "I don't like it when the teacher hogs the piano." (This was on a list of do's and don'ts for piano teachers written by a 5th grader). I have to admit, ever since reading that, I always wonder whether I am crossing the line between showing them what they are aiming for and "hogging" the piano!! :-)
Sorry so long winded. I just finished for the evening, and I guess I am still in piano lesson mode!
Kate