Almost all 3-act tasks begin with a "hook" (an interesting picture or very short video), followed by a related thought-provoking question. During this "second act," students usually work in pairs or groups. The third "act" involves bringing students back together for a consolidation.

Sources of pre-made 3-Act Tasks: 

Graham Fletcher (K-7) Robert Kaplinsky (K-12)

Kristen Acosta (K-6) Kyle Pearce (Gr. 3-12)

Catherine Castillo (K-5) Dan Meyer (6-12)