Answer:
Dependent Clause : Even though they were exhausted from their long day
Independent Clause(s): The seventh graders held a dance that night.
And the eighth graders saw a play.
Step-by-step explanation:
Dependent Clauses have a subject and verb, but can't be used a simple sentence.
Independent Clauses express complete thoughts and have a subject and verb.
Also remember that the seven coordinating conjunctions used as connecting words at the beginning of an independent clause are: and, but, for, or, nor, so, and yet.
And to know if it is a dependent clause, it would be introduced by: after, even though, so, that, whatever, which, although, ever, since, than, when, whichever, as, how, that, whenever, while, as, if, if though, where, who, because, in order, that, unless, whereas, whom, before, since, until, wherever, whose, even if, so (that), what, whether, and why.
Hope this helps!