In the nearly 33 years he has hosted ‘Jeopardy!,’ Alex Trebek has quizzed contestants on countless categories. But his latest turn at announcing a rap category is earning rave reviews on the internet.

Dave Robles, an elementary school teacher from New York City, uses rap beats to help his students learn grammar lessons. New York Teacher Drops Sick Beats For Grammar Lessons NOEL KING, HOST: Keeping ...