Description ┃Biology┃ 1. Animals That Roam Freely How do we classify animals? Animal Classification 12 Where do animals live? Animal Habitats 14 Why do animals evolve? Animals Adapting to the Environment 16 What do animals do in cold winter? How Animals Survive Winter 18 Male or female? Distinguishing Animal Sexes 20 Born, growing up, leaving offspring The Life Cycle of Animals 22 Why isn't a spider an insect? Insect Body Structure 24 Dancing, smelling, and exchanging messages Insect Communication 26 Larvae and adults are so different! The Life Cycle of Insects 28 Are there living things we can't see? Microorganisms 30 2. Plants That Stay in One Place How do we classify plants? Plant Classification 34 Blooming, fruiting, leaving seeds The Life Cycle of Plants 36 What do plants eat to live? Leaves 38 Is there a path inside a plant's body? Stems 40 The mouth of a plant that drinks water Roots 42 Why do plants bloom? Flowers 44 Spreading far and wide matters! Seeds 46 Fruits useful in our daily lives Fruits 48 Plant appearance changes depending on where they live! Plants Adapting to the Environment 50 Is bamboo a tree or a grass? Distinguishing Trees and Grasses 52 3. Curious About the Human Body! I want to know the inside of living things in detail! Anatomy 56 Why is Black people's skin dark? Skin as a Protective Barrier 58 Why does the heart beat faster when you run? The Heart 60 Who discovered blood types? Blood Types 62 The path blood travels Blood and Blood Vessels 64 Why do people breathe? Respiration 66 A journey together with food Digestion 68 Where are sweat and urine made? Excretion 70 Why does your mouth water at delicious food? Conditioned and Unconditioned Reflexes 72 Why does exercise make you healthy? Exercise and Healthy Living 74 4. Living Things Cannot Live Alone! What is an ecosystem? Ecosystems 78 How big can an ecosystem be? Various Ecosystems 80 Who eats whom? The Food Pyramid 82 Why is the sun important? Abiotic Factors Affecting Ecosystems 84 I protect myself! Surviving Predators 86 Why did the artificial Earth fail? Ecosystem Balance 88 How do living things adapt to their environment? Adaptation of Organisms 90 The impact of human activity on ecosystems Ecosystem Destruction 92 Earthworms are guardians of the ecosystem! Organisms That Protect Ecosystems 94 Why are ecological corridors needed? Efforts to Preserve Ecosystems 96 ┃Chemistry┃ 5. What Makes Up the World? What makes the world? Elements 100 Is there unbreakable glass? Properties of Matter 102 Not all cups are the same cup! Uses of Matter 104 Is steam a gas or a liquid? States of Matter 106 Where did the gold found on the ceiling come from? Changes in States of Matter 108 When atoms meet each other, they become molecules! Molecules 110 Let's make a bouncy ball! Molecular Bonding 112 6. The Various Substances Around Us Napoleon and the Pyramids Volume 116 Which cup has more milk? Measuring the Volume of Liquids 118 What is the volume of the crown? Measuring the Volume of Solids 120 How can a hot air balloon float? Volume and Temperature of Gas 122 The fun principle of hopping balls The Volume and Force of Gas 124 How can we smell things? Properties of Gas 126 The gas that boosts our energy Properties of Oxygen 128 The gas produced when living things breathe Properties of Carbon Dioxide 130 The gas that puffs up snack bags Properties of Nitrogen 132 Water is a shape-shifting magician! Water Changing Forms 134 Why does ice float on water? Water and Ice 136 Does water go into the air? Evaporation 138 Water that goes round and round the world The Water Cycle 140 7. Let's Solve the Mysteries of Solutions and Mixtures! Salt that disappears into broth Dissolution and Solutions 144 Why is the Dead Sea called a dead sea? Concentration of Solutions 146 Why does cabbage wilt when salted? Osmosis 148 How is a snowing glass bottle made? Solubility 150 Why can fish breathe underwater? Dissolution of Gases 152 Do people really do laundry with lye water? Acids and Bases 154 Chemicals that distinguish acids from bases Indicators 156 What happens when an acid meets a base? Neutralization 158 What do instant coffee and milk have in common? Mixtures 160 Mixed particles that...