Stephan Is 5 Years Old,and Is Able to Put Moderate-Sized

question 18

Multiple Choice

Stephan is 5 years old,and is able to put moderate-sized jigsaw puzzles together with the help of his older brother.If he tries to do the puzzle on his own,he will usually be unsuccessful.According to Lev Vygotsky,putting together these puzzles falls in Stephan's ______.

• A)zone of optimal development
• B)zone of proximal development
• C)schema of preoperational development
• D)range of accommodation

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Definitions:

Alkyl Halides

Organic compounds containing a halogen atom (chlorine, bromine, fluorine, or iodine) bonded to an alkyl group.

Rearrangements

A type of chemical reaction in which the structure of a molecule is rearranged to form a new structure.

Rate

A measure of how fast or slow a chemical reaction occurs.

Dehydration

The chemical process by which a molecule of water is removed from the reactants to form the product.