The document is an online lesson that teaches students about sorting objects by size into big and small categories. It contains questions that ask students to identify big things like airplanes, elephants, and houses compared to small things like erasers, lemons, and ants. Students are then asked to sort objects like strawberries, carrots, stars, trees, birds, and hearts into big and small groups. The lesson concludes by reminding students to be careful with scissors and looks forward to the next online class.