Tarsus SEV Grade 4 students have been taking lessons that follow STEm approach. First, they were asked to identify a real life problem and to search online about the subject. We asked them to nalyze the data they have gained with the viewpoint of an engineer and build their ideas on it. They have tested the mechanical items that were built in the STEM lab, with the duraion test they had developed , evaluated the outcome and rearranged when needed. The students enjoyed the productive lessons and they have gained many skills by this educational approcah that supports their development in many ways.