Featuring a cast of charismatic characters, this series explains scientific theories and terms from experiments found in upper elementary and middle school textbooks through thrilling experiment showdowns, making them easy and fun to understand. It also covers core scientific principles, making it perfect for boosting kids' interest in science and their spirit of inquiry. In particular, the included 'Experiment Kit' lets readers try out the science covered in the book for themselves, allowing them to see firsthand the powerful learning results that come from hands-on experience rather than simple memorization of theory. For kids who already love science, this book will be a great friend; for kids who find science difficult, it will be an excellent science teacher. Chapter 1: The Moon is Fickle! Science Point: The Moon's revolution, changes in the Moon's phases Home Experiment: Observing the Moon's surface, observing changes in the Moon's phases Chapter 2: An Outlandish Challenge Science Point: The Moon's environmental characteristics, the history and significance of lunar exploration Scientist Who Changed the World: Galileo Galilei Chapter 3: The Moon Swallowed by Earth's Shadow! Science Point: The Moon's rotation, making craters Science in History: Humanity's Challenge, Lunar Exploration Chapter 4: Fight Fair and Square! Science Point: The principles of solar and lunar eclipses, making a simple telescope Experiments in the Duel: Making a Simple Telescope Chapter 5: The Experiment Team Falls Into a Trap?! Science Point: The principles of spring tides and neap tides Science Lab Experiment: Solar and Lunar Eclipse Experiment Chapter 6: Eric's Tears Science Point: The magnitude and direction of centrifugal force, building a roller coaster Experiment: Drawing pictures using centrifugal force Key Notes: The Earth's Satellite, the Moon The fourth round of the finals toward the Olympiad showdown! Will Sun Chogyo, needing just one more win to likely advance to the Olympiad, come out on top? Or will Hanbyeol Elementary deliver a satisfying comeback after falling victim to a match-fixing trap? Wonso senses that there's a conspiracy lurking in the duel between Sun Chogyo and Hanbyeol Elementary, but he can't find any clues, leaving him frustrated. Meanwhile, the action-oriented Woodu decides to just dive in headfirst, unlike Wonso. And so, ahead of the fourth round of the finals, an unexpected friendly match unfolds. Will Wonso succeed in helping the anxious Heo Hong compete fairly in tomorrow's duel? What choice will Eric make, having run forward without looking back in his quest to bring back Teacher Gaseol? Find out in Volume 23 of Tomorrow's Experiment King!