Stem Expo is a competition to inspire school children by robotics and nature. It aims to provide a compelling introduction to computer aided design and bio-inspired design through the design of a humanoid robot bug and teaching it to move. Students of our school were participated in 'STEM EXPO - 2017' conducted in our school campus. CMC STEM EXPO -2017 for 4th and 5th Grade STEM EXPO describes the influence of the 21st century skills on the student's interest in more profound knowledge of control theory and computer science. The meaning of the proposed method is to create such terms of the education process, which provide a struggle between groups of students and such competition involves equal participation for each of them.