The World Series is the championship competition played between the two top Major League Baseball (MLB) teams. Each year, this competition decides which team will become the MLB champion. Learn more about this fascinating championship in World Series, a title in the We Are the Champions series. We Are the Champions is a series of AV2 media enhanced books. Each title in the series features easy-to-read text, stunning visuals, and a challenging educational activity. A unique book code printed on page 2 unlocks multimedia content. These books come alive with video, audio, weblinks, slideshows, activities, hands-on experiments, and much more.