在小学五年级科学下册“阳光下的物体”这一课教学中,有这样一个实验:比较黑色物体和白色物体的吸热能力。教材中的实验是这样设计的:用黑、白2个不同颜色的纸筒放在阳光下,测量其温度的变化。一、实验的不足在教学过程中,笔者发现按教材中的实验设计进行对比实验时,很久都难以看到效果,而且该实验必须走出教室,到有阳光照射的地方才可以完成,给组织教学带来很大麻烦,也耽误不少教学时间,使该 In the fifth grade primary school science under the book “object in the sun ” teaching, there is such an experiment: compare the black objects and white objects endothermic ability. Experiment in the textbook is designed like this: with black and white two different color paper tubes placed in the sun, measuring the temperature changes. First, the lack of experiments In the teaching process, I found that according to the experimental design of textbooks for comparative experiments, a long time are difficult to see the effect, and the experiment must be out of the classroom, to the place where the sun can be completed, to organize teaching Bring a lot of trouble, but also delayed a lot of teaching time, so that