加强中学生物学实验是提高生物学教学质量，培养学生思维能力、实验能力和观察能力的重要方面。在这里除在设备、资金等方面保证到位外，还需要广大中学生物学教师结合本地实际和学校条件，锐意创新，改进出更实用、更有效、更简便、更经济的实验教学方法。一、替代法教师在教? Strengthening secondary biology experiments is an important aspect of improving the quality of biology teaching and cultivating students’ thinking ability, experimental ability and observation ability. In addition to equipment, funds and other aspects to ensure the place, but also the needs of the majority of middle school biology teachers combined with local conditions and school conditions, innovation, and improve a more practical, more effective, simpler, more economical experimental teaching methods. First, teachers of alternative law are teaching?