With their distinctive personalities, the main characters engage in thrilling experiment battles that explain scientific theories and terms found in upper elementary and middle school textbooks in a fun and easy-to-understand way. The series also covers deeper scientific principles, making it perfect for boosting kids' interest in science and their spirit of inquiry. Especially notable is the included 'experiment kit,' which lets readers actually try out the experiments featured in the book—turning simple memorization into hands-on learning with visible results. For kids who already love science, this series will be a great friend; for kids who find science difficult, it will be a wonderful science teacher. Episode 1: Eric's Choice Science Point: Physical Change vs. Chemical Change Home Experiment: Changes in Sugar, Enzymes for Digesting Eggs Episode 2: The Accident That Day Science Point: Digestive Action of Saliva, Silver Plating & Gold Plating Experiments Scientists Who Changed the World: John Dalton Episode 3: The Plan—Find the Hypothesis Teacher! Science Point: The Purpose of Experiments Science in History: Changes in the Concept of Matter Episode 4: The Black Knight in a Wheelchair Science Point: The Principle of Levers, Changes in Our Body Classroom Experiment: Thermal Decomposition of Sodium Bicarbonate Episode 5: Time to Accept It! Science Point: Microorganisms in Our Body, The Law of Definite Proportions Battle Experiment: Silver Plating Using Oxidation-Reduction Reactions Episode 6: Growing Pains Science Point: Neutralization Reactions Key Notes: Changes in Matter, Digestion A Neck-and-Neck Battle: Hanbyeol Elementary vs. Mirae Elementary! The stakes have never been higher! Hanbyeol Elementary and Mirae Elementary, the two top-scoring teams, face off in an intense showdown. Considered elites among elites, Cheon Jae-won and Eric battle it out neck and neck—Jae-won sticking to solid fundamentals, while Eric dazzles the crowd with a flashy performance. But the final results leave everyone stunned. Meanwhile, the Saebyeok Elementary team, searching for the Hypothesis Teacher, seems to be getting closer thanks to Wonso's brilliant strategic thinking... Will they finally be able to meet the Hypothesis Teacher? Discover the kids' intense growing pains and thrilling battles in Tomorrow's Experiment King, Volume 21!