4d master 26087 4d anatomy didactic exploded skull model 4d master part puzzle and part anatomy model, <br>the didactic exploded human skull is a great tool for learning what the major bones of the human skull are. <br>highly detailed, this 3.5" model has 17 detachable parts. each piece has been painted a different color, in addition to having its name and side of the skull printed on it. <br>the assembly guide is illustrated and colored, and has descriptions of what purpose of some of the bones of the skull serve. <br>assembly instructions need to be followed carefully. entire model must be adjusted after each piece is added. <br>the didactic exploded skull is a great addition to the human anatomy curriculum or even for use as a science fair project.