A "Middle Grade Series" refers to a collection of books aimed at readers typically aged 8 to 12 years. These series often feature relatable characters and engaging plots that explore themes of friendship, adventure, and personal growth. Popular examples include Harry Potter and Percy Jackson, which capture the imagination of young readers. Middle Grade Series are designed to encourage a love of reading and often include elements of humor, fantasy, or mystery. They are usually written in a straightforward style, making them accessible for developing readers. Series format allows for deeper character development and ongoing storylines, keeping readers invested.