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. Book banded for guided and independent reading, there are reading notes in the back, comprehensive teaching and assessment support and ebooks available. The children in Andrea’s school call her a space invader because her family lives for free in a building that isn’t theirs. But real space invaders – aliens from another world – have found their way into her home. What do they want? And how can Andrea stop them? Sapphire/Band 16 books offer longer reads to develop children's sustained engagement with texts and are more complex syntactically. Ideas for reading in the back of the book provide practical support and stimulating activities.