伟大的物理学家伽利略毕生从事科学研究的信条是:从观察开始,进而提出猜想,再通过实验来验证。初中物理的入门教学也正是需要遵循观察—猜想—实验的过程,逐步把学生引入丰富多彩的物理世界。一、观察初中学生都有一种好奇的心理特点,他们对什么新鲜的事物都喜欢问一个为什么?教师可利用学生的这一心理特点,引导学生有目的地观察演示实验; The great physicist Galileo’s life-long creed of scientific research was to start with observations, then make conjectures, and then verify through experiments. The introduction of junior high school physics is precisely the need to follow the observation-guessing-experimental process and gradually introduce students into a rich and varied physical world. I. Observing junior high school students have a kind of curious psychological characteristics. What do they like to ask about why they are new? Teachers can use this psychological feature of students to guide students to observe and demonstrate experiments purposefully;