Other great apps from KIDS DISCOVER include: • American Revolution • Ancient Egypt • Ancient Greece • Antarctica • Cells • Civil War • The Constitution • Ecology • Electricity • Energy • Extreme Weather • Galaxies • Geology • Plants • Roman Empire • Matter • Simple Machines • Space • Sun • Washington D.C. • 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.