Use Lexis.com and the Shepardize feature to list each stage in the case of State v. Opperman, 89 S.D. 25 (S.D. 1975). It was heard in trial court, then South Dakota Supreme Court, then U.S. Supreme Court, and finally back in South Dakota Supreme Court.
For each stage, list the court, the basic result (who won), and the citation. You may omit the citation for the trial court stage.
For the final stage in that case, State v. Opperman, 247 N.W.2d 673 (S.D. 1976),
summarize the ultimate result and reasoning in that case.
Summarize the result and reasoning from one case from another state that you find using the Shepardize tool in Opperman, and summarize an ALR article, or law review you find through Lexis.com.