Collins Big Cat is a guided reading series for ages 4--7 edited by Cliff Moon. Top children's authors and illustrators have created fiction and non-fiction books that your children will love to read, banded to help you choose the right book for every child. Practical teaching notes are included at the back of each book. Photos and illustrations combine to give a detailed picture of the fascinating life that goes on underground. We meet animals who live underground, see trains that travel underground and follow pipes, wires and cables from houses deep into the ground. An illustrated double page spread at the end of the book shows the different animals and activities to be found underground, helping children recap the information. Blue (Band 4) non-fiction books use children's language patterns to give information which is supported by the illustrations and design.