Thermal sensors interfaced with computer as extension of senses in kindergarten and primary school

New technologies offer new learning opportunities for teaching science also in primary. Simple experimental situations based on on-line sensors are proposed for interactive activities as a powerful extension of senses. In particular they can allow a phenomenological exploration of thermal processes based on a thermodynamic approach. The exploration of thermal properties by tactile sensation is widened by the use of on-line sensors. In the proposed didactical approach, pupils correlate the processes they realize with the real time graphs they observe, activating imaginative reduction of the concepts under study.