Two different instructional materials: computer-assisted instruction and a computer-based video game were used in this study. For the computer-assisted instruction, a unit of text-based instructional materials was developed. For the computer-based video game, Fire Department 2: Fire Captain, a 3D, real-time strategy game developed by Monte Cristo Games, was chosen for this study. This computer game has been assessed by the Pan-European Game Information (PEGI) age rating system, and has been approved for children seven years and older.