Mrs. juarez divides her class into small, ethnically diverse groups. she then requires each student to become an "expert" in one aspect of an overall project and then teach it to other members of his or her group. mrs. juarez is using:

the united states has a federal government. the president is the head of the federal government of the united states. however, each state forms its government for administration purposes. the powers of the state governments are exercised within restricted state boundaries. and citizens participate in this government by voting.