Collins Big Cat supports every primary child on their reading journey from phonics to fluency.Top authors and illustrators have created fiction and non-fiction books that children love to read.Leveled for guided and independent reading, each book includes ideas to support reading.Teaching and assessment support and eBooks are also available. The amazing auroras - sometimes known as the northern orsouthern lights - are lights which appear in the sky at certain times.Find out where you can see them and what causes this phenomenal natural light show. Emerald/Band 15 books provide a widening range of genres including science fiction and biography, prompting more ways to respond to texts.