Jean Piaget's Cognitive Development Theory

1. Sensorimotor Stage - ସମ୍ବେଦୀକାରକ ପର୍ଯ୍ୟାୟ

ସମ୍ବେଦୀକାରକ ପର୍ଯ୍ୟାୟ	Sensorimotor Stage
ବୟସ	Birth to 2 years

Key Features:

1. Learning through Senses: Child learns by touching, seeing, hearing, sucking
2. Object Permanence: Understands objects exist even when not seen
3. No Language: Communication is only through actions and reflexes
4. Goal-directed behavior: Starts developing towards the end of this stage

Note: This is the 1st stage of Piaget's Cognitive Development Theory.

2. Pre-Operational Stage - ପ୍ରାକ୍ ସଂକାର୍ଯ୍ୟଧର୍ମୀ ପର୍ଯ୍ୟାୟ

ପ୍ରାକ୍ ସଂକାର୍ଯ୍ୟଧର୍ମୀ ପର୍ଯ୍ୟାୟ	Pre-Operational Stage
ବୟସ	2 to 7 years

Key Features:

1. Symbolic Play: Uses objects to represent something else. Ex: Stick = Gun
2. Egocentrism: Child thinks everyone sees the world like they do
3. Animism: Believes non-living things have feelings
4. Centration: Focuses on only 1 aspect. Can't do conservation
5. Language Development: Rapid increase in vocabulary

Note: This is the 2nd stage of Piaget's Cognitive Development Theory.

3. Concrete Operational Stage - ସ୍ଥୁଳ ସଂକାର୍ଯ୍ୟଧର୍ମୀ ପର୍ଯ୍ୟାୟ

ସ୍ଥୁଳ ସଂକାର୍ଯ୍ୟଧର୍ମୀ ପର୍ଯ୍ୟାୟ	Concrete Operational Stage
ବୟସ	7 to 11 years

Key Features:

1. Conservation: Understands quantity remains same even if shape changes
2. Logical Thinking: Can solve problems logically with real objects
3. Classification: Can group and regroup objects
4. Seriation: Can arrange objects in series
5. Reversibility: Understands actions can be reversed

Note: This is the 3rd stage of Piaget's Cognitive Development Theory.

4. Formal Operational Stage - ବିମୂର୍ତ୍ତ ସଂକାର୍ଯ୍ୟଧର୍ମୀ ପର୍ଯାୟ

ବିମୂର୍ତ୍ତ ସଂକାର୍ଯ୍ୟଧର୍ମୀ ପର୍ଯାୟ	Formal Operational Stage
ବୟସ	12 years and above

Key Features:

1. Abstract Thinking: Can think about abstract and hypothetical concepts
2. Logical Reasoning: Can solve problems without concrete objects
3. Deductive Reasoning: Can go from general to specific
4. Problem Solving: Can test multiple solutions systematically
5. Scientific Thinking: Can form and test hypothesis

Note: This is the 4th stage of Piaget's Cognitive Development Theory.