Research shows that it is through having many opportunities to talk as well as to listen to adults and peers that children gain language skills so valuable for their success in reading and writing. "Language development is fostered in caring relationships by frequent, vocabulary-stretching conversations that build on young children's natural curiousity." (Betty Bardige, 2009) How do you know? is a book about a mother and child outside walking in the fog and talking about what they can and cannot see. Talk a walk in the fog with your own child and compare your experiences with those of the characters in this book.