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pH 传感器(图1)是化学实验里的一种常用仪器,其功能是测定溶液的 pH,一般测得的数值能够精确到小数点后两位。它原本是科研工作者必不可少的装备,如今也走入了中学化学课堂,成为老师们突破教学难点的得力助手。下面介绍《中国多媒体教学学报》2006年第4期发表的两篇文章,谈谈 pH传感器在教学中的妙用。
The pH sensor (Figure 1) is a commonly used instrument in chemical experiments. Its function is to measure the pH of a solution. Generally, the measured value can be accurate to two decimal places. It was originally an indispensable equipment for scientific researchers. Now it has also entered the middle school chemistry class and has become a competent assistant for teachers to break through the difficulties of teaching. Here are two articles published in the 4th issue of China Multimedia Teaching Journal, 2006, on the usefulness of pH sensors in teaching.