Description: Through thrilling experiment battles among charismatic characters, this book explains the scientific theories and terms found in upper elementary and middle school textbooks in an easy and fun way, while also covering key scientific principles - perfect for boosting children's curiosity and interest in science. In particular, the included 'experiment kit' lets kids actually perform the experiments featured in the book, allowing them to see real learning outcomes through hands-on experience rather than simple memorization. For kids who love science, this book will be a great friend; for kids who find science difficult, it will be an excellent science teacher. Chapter 1: An Uneasy Beginning Science Point: Causes and movement of waves, movement of seawater Home Experiment: Separating salt from seawater, discovering the shape of the seafloor Chapter 2: The Path We Must Take Science Point: Erosion caused by waves Scientists Who Changed the World: Charles Wyville Thomson Chapter 3: Who Will Win the First Round? Science Point: Principles of wave power generation Science in Everyday Life: Resources in the sea Chapter 4: Behind the Incident Science Point: Making seawater with solar salt, components of salts, units of salinity, the law of constant salinity ratio Experiment During the Battle: Measuring the salinity of seawater Chapter 5: Three Clues Science Point: Factors affecting wave power generation Science Lab Experiment: Movement of ocean currents due to temperature differences Chapter 6: The Second Conspiracy Begins! Science Point: Tidal power generation Key Notes: The structure, properties, and movement of the sea The first round of the main tournament finally begins. But with Teacher Gaseol absent, a shadow of crisis falls over Saebyeok Elementary. Adrift like a stranded ship in the vast ocean, Saebyeok Elementary takes on the challenge with an experiment inspired by an offhand remark from Wonso - a reckless experiment never attempted before! Meanwhile, Eric, watching the experiments of Saebyeok and Taeyang Elementary, loses his composure at the sight of Teacher Gaseol's empty seat. Then a suspicious piece of mail arrives for Eric - what could it possibly say? The tense first round of the main tournament, and the truth behind the conspiracy to manipulate the competition, are revealed in Tomorrow's Experiment King Volume 20!