上课了,只见华老师拎着一盒实验器材放到了讲台上,有小木块、海绵、面粉、大米。这是要做什么呢?原来是让大家用学过的密度知识,设计一下这四种物质的密度测量实验。教室里一下子炸开了锅,大家跃跃欲试想展示自己的奇思妙想。物理小灵通小虎第一个举手发言,他要说的是木块质量的测量实验设计:1.调节天平平衡;2.测量小木块的质量m;3.在量筒中倒入适量的水,用细绳将小石 Class, I saw a teacher carrying a box of experimental equipment on the podium, there are small wooden blocks, sponges, flour, rice. This is what to do? The original is for everyone to learn the density of knowledge, design of these four kinds of material density measurement experiment. Suddenly burst into the classroom pan, we all want to show their own whimsy. Physical Little Tigers tiger first raise his hand to speak, he would like to say is the quality of wood experimental design: 1. balance adjustment balance; 2. measure the quality of small wooden m; 3. in the measuring cylinder into the right amount of water, Small string will be a small stone