What bores you

What motivates you

Be flexible

Challenge the students

Keep in mind yours and the students' limitations

Be creative

Engage the students

Allow them to be kids

Be firm

Be patient

Allow yourself to be a kid

Not all will like you

The students are people

You are people too

Above all else...

Enjoy what you do and have fun. Short of being slowly gummed to death by slobbering, toothless, senile old people, not much is worse than a teacher who doesn't want or like teaching.