I have been planning lessons and having classes and I have come up with some tips you teachers could be interested in.
1) Engage your students - no matter what they are learning (e.g. vocabulary, grammar) the more they have fun the more they will learn.
2) Be prepared - consider your own vocabulary and language awareness. Students rely on you, be ready to answer their questions.
3) Elicit - by conditioning students will be more aware of what they are learning.
5) Speak little, speak well - give students as much time as possible to speak. Speak just to give them instructions!
I hope these tips will be useful! Bye for now!