The distinction between significance and value

Being give the rule or getting the rule from the examples

The learner's current ability

Behaviourism

Scaffolding

The distinction between unconscious picking up and conscious language study

Cognitivism

The distinction between what we can say and what we do say

All languages have common features

Constructing an internal grammar

Deductive vs. Inductive processing

Interlanguage

ZPD

Stimulus - Response theory

Universal grammar

Competence vs. Performance

Acquisition vs. Learning

Use vs. Usage