The document defines and describes several key concepts in language teaching and learning:
- The zone of proximal development refers to what a learner can do with help versus without help.
- Total physical response uses actions and physical movement to teach language to young children through following teacher instructions.
- The target language is the language being studied, while one's mother tongue or native language is their first language.
- Approaches are methods used by teachers to instruct language, while acquisition involves natural communication versus learning with a focus on language forms.