Very. Engaging with digger books and toys like excavators, trucks and blocks, is excellent for various areas of development. Firstly, creativity – children's digger books help the brain to work beyond a one-directional way of thinking. Secondly, problem-solving – through constructive play and reading books about diggers, a child will learn what will work and what won’t. Learning about trial and error is a super important skill to get started on early. Thirdly, fine motor skills – playing at construction helps to develop small muscles in hands and fingers. Finally, cooperative play – construction play helps children to cooperate with each other in order to complete tasks. Whether it’s passing bricks to one another, or organizing trucks by size and color, time spent on the ‘building site’ strengthens social skills and makes for better team players.