The Martian family, which includes Aaron, Abner, Jamie, and Janet, have just landed on Mars.They are the first people to land along with their dog, Marvin. While they landed during the daylight hours, darkness is approaching in 45 minutes! What creatures lurk on this planet at night? The Martians don’t want to find out! Help them to quickly determine the area and perimeter of their yard and home so they can build before time runs out!