关键词：电子信息；计算机；交互式系统；构建
摘 要：The paper presents a prototype of a system which can be used as a therapeutic and educational tool for children with developmental problems. Natural body movements and gestures are used in the system to interact with virtual objects displayed on the screen. Nowadays such systems can be built with the use of widely available free software tools for both graphical and vision applications. Such tools are also shortly presented in the paper.