An "Educational Series" refers to a collection of lessons or episodes designed to teach specific subjects or skills. These series can be found in various formats, including books, videos, podcasts, or online courses. They often cover topics such as science, history, mathematics, or language learning, making them accessible to learners of all ages. Typically, an educational series is structured to build knowledge progressively, starting with basic concepts and advancing to more complex ideas. Many series are created by educators, institutions, or organizations, and they aim to enhance understanding and retention of information through engaging content and interactive elements.