:: :: Young readers will discover: •  what makes a mammal a mammal •  all about mammals with pouches •  how placental mammals are unique •  how all mammals are alike •  several major categories of mammals LEARNING OBJECTIVES: This unit will take your child on a flight through all nine of the planets in our Solar System.  Learn about comets, meteors, and asteroids.   Make a model of Saturn, and learn how big the sun is compared to the earth. The Solar System Solar System e-Book Curriculum - $4.95 Solar System Curriculum Core text is sold separately. Solar System Core Text Solar System Core Text: - $11.99 This book is also available in the Solar System Core Text Bundle. “Internet-Linked Children’s Encyclopedia” :: Solar System Astronomy & Space Space Travel The Solar System Free Sample Unit! Astronomy and Space View Cart Home Available Units