Lego duplo bricks are great for the youngest children. The larger pieces allow toddlers to use the bricks and blocks with their own small hands. They will lose their imagination with these cars, trains, lego houses, rockets and all kind of structures. Have fun with these great lego duplo constructions. Building with lego duplo adds a lot the development of motoric skills. These are step-by-step instructions for children starting from the age of 4 years old! Have fun!