Time for the songs! children love them. and you must be practicing each of them at least 5 or 6 classes before they actually learn it. But that's perfectly fine! less class preparing after all. This is not the only song for saying hello. But if your 4 neurones handled to bring you here, they can bring you to the fabolous world of internet.
Hello is a meaningful situation, the problem is it's being a very short one. How R you gonna have students practice it without feeling like idiots if they are too old to sing hello hello? by giving them options.
hello- hi, or even howdy. If you tell them that it's like "quiubo" or some kind of slang, you're gonna have them in your hand if they are teens. Then, give situations.
The phone: any object (even a real cellphone) works. The message is simple, they don't answer so, every student must* say "hello +this is + his name + I call you later + my number is 555-5555 + call me when you're hot and ready" (last part a joke, but if you have a cute friend I WILL facilitate my real number)
The different names: make cards with lots of differents names, and everybody pics one, walk around the calssroom meeting everybody and saying his name.
*Natural approach tells in its overrating wisdom that we should avoid writing before speaking. Both, you can give certain permission. Not only because it's easier to check if it's done, but also will help Ss feel comfident about their performance. So, writing first it's ok for people older than 11.
Don't forget that greeting and saying bye are the combo, you can't talk about one without the other one.
Behind them In this lesson you actually start with the situations. From now on, everything must be said in context and within a communicative situation. Otherwise, Mexico no va a progresar nunca. tichers, está en sus manos!