Oxford Reading Tree Read with Biff, Chip, and Kipper: Phonics: Level 6: Gran"s New Blue Shoes Read With Biff, Chip and Kipper Phonics have been specially written to enable children to practise their letters and sounds. Level 6 stories practice various spellings for long vowel sounds such as "oo" as in blue, cool, shoe, new. Each book includes tips for reading together and talking about the story, puzzles and fun activities.