In the material, children immediately find themselves on a construction site: A house is being built. The students explore the construction site before turning their attention to the people, professions (e.g., architect, mason, foreman, etc.), and trades involved. They also closely examine the vehicles (e.g., dump truck, excavator, wheel loader, etc.), tools and their respective functions, as well as the tasks and processes necessary to build a house in the chapters. On exceptionally lovingly illustrated worksheets, among other things, a crane and a bridge are constructed, two puzzles are solved, various matching tasks are completed, and a game of construction site Mau-Mau is played. Things are bustling at the construction site, and that’s just fun!.