2, to be clear about the items in the laboratory, do have answers about the operation steps.
3. Make clear the experimental items and make test records at the end of the experiment.
4, pay attention to the toxic substances in the experimental project, many experiments will be exposed to toxic substances, so pay special attention to this.
5. The wastes produced in the experiment process can't be treated independently, and should be treated according to the teacher's requirements.
6, after the completion of the experiment to clean up the experimental instruments, in case of biochemical pollution.
The content of junior high school biology experiment operation examination is based on "Biology Curriculum Standard for Full-time Compulsory Education (Experimental Draft)", which mainly tests students' practical ability and strives to be scientific, standardized and accurate, so as to cultivate students' innovative consciousness and spirit and improve their practical ability.