The “Children’s Encyclopedia Why 100,000?” is an educational book series written by Doris Walton, perfect for primary school students looking to expand their extracurricular reading. The books, part of the TIKBOOKS series, cover a wide range of subjects in English language. With a beginner level, this encyclopedia provides a fun and engaging way for young readers to explore and learn about different topics beyond the classroom. Ideal for supplementing school education, these books are filled with interesting information and illustrations to capture the imagination of young minds.