经过初一的学习，初二学生已经具备了初步的中学学习能力，但长期单一性的教学模式，使学生易产生思维惰性，在身心发展的整体把握上存在欠缺。因此，应采取一系列方法去激发学生学习与钻研物理的兴趣，启发他们的思维，帮助他们树立科学严谨的思维方法，培养与提高观察、分析 After the first year of study, the second grade students already have the initial ability of learning in middle schools. However, the long-term single-class teaching mode makes students prone to thinking inertia and lacks in the overall mastery of physical and mental development. Therefore, we should adopt a series of methods to stimulate students' interest in studying and studying physics, inspire their thinking, help them to establish scientific and rigorous thinking methods, cultivate and improve the observation and analysis