Kalim wants to study the effectiveness of a new teaching method. he includes two teachers of a class in the experiment. one teacher uses the new method of teaching, and the other teacher uses the old method. at the end of the semester, he finds that students who were taught in the new way had higher grades than students taught in the old way. what is the confounding variable?

Below is a digram of a hypothetical bill. which of the following must be the missing legislative step in the diagram?

If you had been an american colonist, would you have supported the declaration of independence? why or why not?

Which statement best explains how world war ii to end the great depression? a. new job opportunities opened as the united states produced more military products. b. the u. s. army provided new jobs that paid better than any other work at the time. c. people had to worry more about war problems than about the economic crisis. d. the war caused people to trust the economy enough to spend more money.