The book Two is written and illustrated by Kathryn Otoshi and is about a 2 who was best friends with 1 but one day number 3 bugged in and stole 1 they were best friend. 3 gives a lot of good reasons why he should be his friend for example he says that evens can not be friends with ods. This goes on for a long time, but in the end 2 is after 1 so they will be friends for ever as long as the number line does not change. The theme of this book is friendship, the reason I think this is because the whole book is based on friendship and how 2 needed 1. This book is for 7-9 year olds because it’s a valuable lesson for little kids. All in all, I would recommend this book to a lot of little kids.