Paul South is small for his age, an easy target for bullies. But it all changes when the 'bubble' appears. Paul has a rollercoaster ride but what about the bubble's plans? They might be more sinister than he realises... This hi-lo series for struggling and reluctant readers has been written for children aged between 11 and 14 years, whose current reading age is between 7.5 and 8.5 years. These age-appropriate short reads have 32 pages and are written by gifted authors writing stories with relatable characters. They incorporate a large font size and text separated into bite-sized chunks, along with carefully considered letter and paragraph spacing that can reduce visual stress. The series has plenty of practice at one level, allowing consolidation of learning before moving on to more challenging reads.