Classes have always been, and will continue to be, heterogeneous. In every classroom, educators encounter students with diverse backgrounds, abilities, and interests, readiness levels and learning preferences.  Yet, not until quite recently, have many teachers started to admit the importance of finding out teaching strategies and techniques that address heterogeinity. 

Teenagers are often labelled as defiant, rebellious, and out of control. However, teens are also thoughtful, curious, and energetic, and if we can position ourselves as their ally and guide, teaching them can be a rewarding experience.

Students misbehaving, homework not being completed or handed in late, spending too long preparing classes and marking; what could they all have in common? Perhaps one contributing factor is a lack of well-communicated and enforced rules.