Big-Time Biology Adventures: Kids explore the names and functions of the body’s organs, build their own 3-D model of our biological systems, and more with these hands-on preschool science activities! Kids learn about the inner workings of the human body with the help of age appropriate activities and 3-D pieces for enhanced hands on learning. Learn the names, functions, and locations of organs, systems, and more! Includes full-color write-and-wipe guide with worksheets. Details: 17 pieces 24 pages of activities and fun facts about the human body Develops early math, fine motor, patterning and critical thinking skills For ages 4 and up