Examlex
Simplify the polynomial by combining like terms.
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Object Permanence
The understanding that objects continue to exist even when they cannot be seen, heard, or otherwise sensed.
Egocentric Behavior
Conduct based on a lack of understanding, or refusal to acknowledge, the perceptions, thoughts, and feelings of others.
Pretend Play
An imaginative activity in which children represent and act out scenarios, often involving role-playing and make-believe components.
Object Permanence
Recognizing that objects maintain their existence even when they cannot be observed, heard, or sensed in any way.
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