Haba 4 First Puzzles – Construction Site. The puzzle box for children aged 2 and up contains four designs themed around construction sites made from large puzzle pieces. The fantastic designs consist of 2, 3, and 4 sturdy cardboard pieces that small hands can easily grasp and assemble. Trucks, excavators, cranes, and concrete mixers continually delight little puzzle fans and encourage storytelling. The baby puzzle promotes hand-eye coordination, careful observation, fine motor skills, and language development. Exciting Haba puzzles in a set with increasing difficulty provide immense fun in matching.