A girl finds a big box in the market and it suddenly starts moving! What could be inside the box? The Big, Bad Box is wordless book with stunning, highly detailed illustrations that give plenty of opportunities for discussion. Oxford Reading Tree Story Sparks is an emotionally-engaging fiction series that will fire children's imaginations and develop their comprehension skills. The variety of authors and illustrators broadens children's reading experience, with something to appeal to every child. This story is one of six titles at Oxford Level 1, which are wordless and provide engaging stories through illustration. All the books in the series are carefully levelled, making it easy to match every reader to the right book.