实验现象往往是学生形成兴趣的基础.能激发学生的求知欲.物理实验课具有直观、真实、形象和生动的特点,能吸引学生的注意力,活跃课堂气氛.课堂上的小制作,还会充分调动学生学习的主动性,激发学生的学习潜能.在探究通电螺线管内部及周围的磁场特点实验中,因为学校大多数只配备了演示器材,不能满足学生强烈的探究欲望,所以可以利用身边的简单原材料自制螺线管来完成探究实验. Experimental phenomenon is often the basis for the students to form an interest.It can arouse students ’curiosity.Thirdly, the physical experiment class has the characteristics of intuition, reality, vividness and vividness, which can arouse students’ attention and active classroom atmosphere. Fully mobilize the initiative of students to stimulate students ’learning potential.In the experiment of exploring the characteristics of the magnetic field inside and around the solenoid, because most of the schools are equipped with demonstration equipment, which can not meet the students’ strong desire to explore, so we can use Around the simple raw materials made of solenoid to complete the exploration experiment.