Opening Whistle.

Inventing American sport, 1860s–1900: factory whistles, railroad schedules, the first leagues, and a color line drawn on purpose. Watch the briefing, then work the three drills below. Nothing is saved or sent anywhere.

1 · The Four Threads

Every story this semester runs on one of four threads. Read the headline, call the thread. Score: 0 / 0

2 · Order of Play

Build the timeline: click the events in chronological order, earliest first. Wrong click flashes red — no penalty except shame.

3 · The Box Score

Eight questions. The tally is watching.