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••• Selected as Editor's Choice by Apple - June 2013 ••• Take an in-depth look at matter’s many mixed-up forms, learn about the difference between chemical and physical changes, and examine matter's four possible states: solid, liquid, gas and plasma. Reading Level: Upper Elementary and Middle School In this app you'll learn about:What Is Matter? • Different Kinds of Matter • Mixtures and Matter • Properties and States of Matter • Physical and Chemical Changes • How Matter Works • Fun At-Home Experiments Features include: • Interactive 3-D models • High-definition video and audio • Hi-res photographs, cartoons, and animations • Easy-to-read, accessible writing • Quizzes, puzzles, and other fun games Plus…optimized for the iPad Retina display KIDS DISCOVER has been creating award-winning content for kids for over 20 years. KIDS DISCOVER apps are always AD-FREE. Other great apps from KIDS DISCOVER include: • Ancient Egypt • Ancient Greece • Antarctica • Cells • Civil War • Constitution • Ecology • Extreme Weather • Galaxies (FREE) • Geography • Matter • Space • Washington D.C. • Simple Machines • Sun and More! To learn more about us and our mission to inspire kids, feed their natural curiosity, and instill a love of reading and learning, please visit us at www.kidsdiscover.com.