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新教材介绍演示比热这个实验，存在美中不足的方面，需进一步改进完善。通过教学实践，最近我们进行了如下尝试：1．课文中指出本实验需用“同样”的两个电热器（热得快）加热，应改为用“同一个”热得快加热，才能使实验结果准确：我们对每个热得快进行了测定，发现同样规格电
The introduction of the new teaching materials for the demonstration of specific heat has some aspects of the fly in the ointment and needs further improvement. Through the teaching practice, we recently conducted the following attempts: 1. The text points out that this experiment needs to be heated by two electric heaters (the same heat) that are “same”. Instead, they should use “the same” heat to heat up quickly in order to make the experimental results accurate: we perform each heat quickly. Measured and found the same size electricity