Description Based on the renowned Encyclopaedia Britannica published by Encyclopaedia Britannica, Inc. in Chicago, USA, this book systematically organizes the essential curriculum content that Korean elementary school students need to know. By covering comprehensive knowledge related to each topic without separating humanities and social studies from natural sciences, it helps nurture creative talents equipped with both humanistic imagination and scientific understanding. Rather than relying on lengthy, tedious text, the book presents large amounts of information through visual images. The infographic at the beginning of each volume summarizes the core content using diagrams and illustrations, sparking readers' interest right away. The main comic strips, which explain learning content in an entertaining way, along with vibrant photographic images, help readers quickly absorb and retain information for a long time. Moreover, rather than simply listing fragmented facts, the book portrays its comic characters applying the knowledge and experiences they've gained to pursue positive values. Readers will encounter stories that cherish the environment, respect differences, and consider the greater good of humanity. Prologue: Off Again on a Nature Documentary Shoot! 8 01. Invertebrates: Animals Without Backbones 14 The Pillar That Supports Our Body, the Spine What Are Vertebrates? What Are Invertebrates? Classification of Animals Traces of Ancient Animals 20 What Animals Lived on Earth Long Ago? 02. Sponges and Cnidarians The Curious Animal Full of Holes, the Sponge 26 Nature's Sponge, the Bath Sponge What Is Metabolism? Body Structure of Sponges Various Types of Sponges The Tree-Shaped Animal, Coral 38 What Are Cnidarians? Various Types of Coral The Flower-Like Animal, the Sea Anemone 42 The Fearsome Venom of Cnidarians Animals That Live in Symbiosis with Sea Anemones The Jellyfish, Hiding Venom Beneath Its Beautiful Form 49 Body Structure of Jellyfish Types of Jellyfish How Do Invertebrates Reproduce? 52 Reproduction in Sponges Sexual and Asexual Reproduction Various Types of Asexual Reproduction The Immortal Animal, Turritopsis dohrnii Body Structure of Hydra The Life Cycle of Hydra Sponges and Cnidarians That Live in the Sea 03. Flatworms and Roundworms The Planarian That Splits in Two 64 What Are Flatworms? Body Structure of Planarians Sexual Reproduction in Planarians The Regenerative Ability of Planarians Flat Flukes and Slender Tapeworms 78 Body Structure of the Liver Fluke The Resilient Parasite, the Liver Fluke What Are Tapeworms? Parasites That Live Off Other Organisms 83 What Is Parasitism? Various Types of Parasites Roundworms What Are Roundworms? Parasites That Live Inside the Human Body Good Parasites and Bad Parasites 04. Annelids and Mollusks The Wriggling Sea Worm and Earthworm 96 What Is a Sea Worm? The Giant Bristle Worm What Are Annelids? Body Structure of Earthworms How Earthworms Reproduce Making an Earthworm Compost Pot Using Earthworms to Process Food Waste Sea Worms with Interesting Names The Leech That Feeds on Animal Blood 108 Types of Leeches Hirudin, Nature's Blood Thinner Medicinal Leeches Super Leeches The Slow and Leisurely Mollusk, the Snail 115 What Are Mollusks? Body Structure of Snails Snails That Live in Water Slugs Without Shells The Snail's Shell Uses of Snails Various Types of Mollusks The Shellfish That Sparkles and Makes Pearls, the Clam 124 The Pearl Oyster That Creates Pearls Body Structure of Shellfish Foreign Substances Pearl Oyster Farming How Clams and Snails Reproduce The Many-Armed Mollusks, Octopus and Squid 130 Body Structure of Squid The Octopus, Similar in Body Structure to the Squid How Squid Reproduce Camouflage Techniques of Squid and Octopus How Octopus and Squid Move The Octopus That Sprays Ink 05. Echinoderms and Arthropods The Spiky Star of the Sea, the Starfish 140 Various Forms of Starfish What Are Echinoderms? Body Structure of Starfish Various Types of Echinoderms How Echinoderms Reproduce Asexual Reproduction in Sea Cucumbers Arthropods, Whose Legs Are Made of Segments 150 Types of Arthropods What Is Metamorphosis? The Growth Process of Centipedes and Spiders Insects, the Invertebrates That Can Fly Insects That Live Around Us Epilogue: A World Where All Animals Live in Harmony 159 Reading About Invertebrates Through the Britannica World Encyclopedia A Nature Documentary for Children — Amphibians and Reptiles Edition Ro-un and Seul-gi, who just returned from filming amphibians and reptiles, get another chance to go on a documentary filming trip. This time, the animals they'll observe are invertebrates — animals without backbones!...