Social Studies, 16.09.2019 16:30 lazok
Ateacher rewards his students by distributing plastic chips. students receive a chip for each instance of desirable behavior. at the end of each month, they can exchange their chips for prizes. the teacher sees major decreases in undesirable behaviors as a result of this system, which is known as:
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Why was frederick douglass encouraged by the dred scott decision?
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Which at first gave the south an edge in the civil war? a. a better-equipped army b. the invention of ironclad ships c. the drafting of slaves into the army
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What is generally true of the lower house in a state legislative branch ?
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Ateacher rewards his students by distributing plastic chips. students receive a chip for each instan...
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