In the recorded lesson, students learned about the musculoskeletal system, which consists of the skeletal and muscular systems, focusing on the importance and structure of bones. The narrative follows Chloe and Nurb, discussing the key roles of bones, including movement, protection of organs, and blood cell production, as well as the composition of bones, such as calcium. Key features like bone types (axial and appendicular), joints, ossicles in the ear, and types of fractures are also introduced, with a fun activity of building a temporary skeleton at “The Boneyard.”