This is a 2-in-1 book for readers aged 7 to 11 years old. In the fiction text, Isaac and his friends battle a giant Toxic spider! In the non-fiction, find out amazing facts about how animals make and use electricity. Isaac and the Toxics: Shocking Creatures is at Oxford Reading Level 6. It is a fully-decodable book for pupils who are working below expected standard in their reading. The Rise series ensures that older struggling readers have books with age-appropriate content and topics, that look like the books their peers are enjoying, but are written at a level they can read successfully.