Collins Arabic Big Cat is a guided reading series for ages 3 to 11. The series is structured with reference to the learning progression of Arabic at nursery and primary schools researched especially for Collins. This carefully graded approach allows children to build up their reading knowledge of Arabic step by step. Level 10 books include characters that express emotions and stories with more events. Non-fiction titles introduce terms that might be new to many children. Level 10 books continue to use single spacing and more high-frequency words appear without vowel markings to help the students get used to the traditional norms of printed Arabic. This unique persuasive text takes the form of a fictional holiday to Mars, presenting factual information about the red planet. The text draws comparisons between Earth and Mars, and considers aspects of space travel such as weightlessness and the lack of oxygen. A pictorial glossary is provided on pages 22 and 23 encouraging discussion and reinforcement of technical terms.