How can a little mouse help Billy Lion? Green Band books include longer, more complex words and sentence structures focus on the use of punctuation. Topic-specific vocabulary is used, with moderate support from illustrations. Contains full teaching support including learning outcomes, curriculum links and follow-up activities. Endorsed for reading by Cambridge Assessment International Education, Cambridge Reading Adventures is our international primary reading scheme. How can a little mouse help Billy Lion? Green Band books include longer, more complex words and sentence structures focus on the use of punctuation. Topic-specific vocabulary is used, with moderate support from illustrations. Contains full teaching support including learning outcomes, curriculum links and follow-up activities.