Examlex
What were the two primary courses of heating that let the Earth differentiate?
Lymph Tissue
A vital part of the immune system, made up of organs and cells that produce, store, and carry cells that fight infection.
Preoperational
Referring to Piaget's stage of cognitive development in children aged 2-7, characterized by symbolic thinking and difficulty understanding others' perspectives.
Secondary Circular Reaction
A stage in Piaget's theory of cognitive development where infants (4-8 months) repeat actions to get desired outcomes, showing the beginning of intentional behavior.
Tertiary Circular Reaction
A concept in cognitive development referring to a stage in Piaget's model where infants 12-18 months old purposefully experiment with different actions to observe outcomes.
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