Space Professor is an educational game which requires some arcade skill of the traditional variety, for it is a shoot em up. It also requires some quite nifty mathematical abilities on the harder levels' The screen takes the form of something between 'Space Invaders' and 'Galaxians'. You are at the base, on the ground in a laser tank, firing upwards at the hordes of descending alien craft. Each of these has a number on it. Below the playing area a sum will be displayed and you must work out the answer as fast as possible so that you can shoot up all the aliens excepting the craft with the correct answer to the sum on it. This must be allowed to land unhindered to win.
Meanwhile, you must avoid being hit by the missiles that the aliens are firing down on you. On an easy level, this is pretty simple and suitable for fairly young children. However, on a harder level with, say division and a fast speed, working out 891 divided by 91, can be quite difficult.
There is an option menu to select between addition, subtraction, multiplication or division; three speeds of play; and control from keyboard or Joystick. If you get a sum right, the computer plays a tune and the arriving space craft puts down feet and puffs importantly to a stop.