On a trip to a museum, Charlie suddenly finds herself transported back in time to an Aztec village! She's arrived on the day of an annual sports contest - all the boys in the village will compete in a game of Ulama. Charlie loves sports and thinks that girls should be allowed to play too, so she enters the contest in disguise! Can she win and can she figure out a way home? Charlie and the Aztecs is a brilliant time travel adventure!Oxford Reading Tree Story Sparks is an emotionally-engaging fiction series that will fire children's imaginations. These 36 original stories will get children thinking, and develop and deepen their comprehension skills. The variety of authors and illustration styles broadens children's reading experience, with something to appeal to every child. All the books in the series are carefully levelled, so it's easy to match every child to the right book for them. They also contain inside cover notes, to enable parents and teachers to support children in their reading. Help with children's reading development is also available at www.oxfordowl.co.uk.