Abstract: An educational robot apparatus for children, as a type of a user created robot (UCR), includes a robot and a robot control program having a decoder, a controller and a transferor. The decoder scans an input card and has first and second photo-interrupter. The input card includes an information code and a reference code. The information code has a code information written as a barcode shape. The code information corresponds to an imperative sentence included in a robot control program. The reference code is written as a uniform barcode shape and is used in decoding the code information. The first photo-interrupter reads the information code and decodes the code information, and the second photo-interrupter decodes the reference code. The controller codes the robot control program based on the code information decoded by the decoder. The transferor transfers the robot control program to the robot.