theoretical perspectves:

1. vygotsky

1.1. language acquisition suporrt system

1.2. zone of proximal development

1.3. development level

2. skinner

2.1. operant conditioning

2.2. imitative speech

2.3. behaviorist perspective

3. Chomsky

3.1. universal grammer

3.2. language acquisition device

3.3. hypothesis testing

4. piaget

4.1. object permanence

4.2. preoperational stage

4.3. signs

5. behaviorist

5.1. nurture

5.2. semantic

5.3. syntactic

5.4. morphemic

6. interactionist

6.1. nurture

6.1.1. Detail 1

6.1.2. Detail 2

6.2. Pragmatic

6.2.1. Detail 1

6.2.2. Detail 2

6.3. vygotsky

6.3.1. bruner

6.3.2. halliday

7. nativist

7.1. nature

7.2. syntactic

7.3. chomsky

8. cognitive developmentalist

8.1. nature

8.2. semantic

8.3. morphemic