手持技术是一种先进的实验系统,它可以将理科教材中的实验和学生的实验结合起来。在人教版必修2化学能与热能教学中,有三个实验现象不明显,热效应很难通过普通仪器测量,因此,运用手持技术来测量化学能与热能中的三个实验,并将数据投影出来,操作简单,数据丰富,图表直观明晰,从而改变了传统的教学模式,提高了教学质量。 Handheld technology is an advanced experimental system that combines experiments in science textbooks with students’ experiments. In the PEP 2 Computational Energy and Thermal Teaching, there are three experimental phenomena are not obvious, the thermal effect is difficult to measure by ordinary instruments, therefore, the use of hand-held technology to measure the chemical and thermal energy of the three experiments, and the data projection , Simple operation, data-rich, intuitive and clear chart, thus changing the traditional teaching mode, improve the quality of teaching.