Answer: I don't agree with this teacher's practice. The math practice teacher's maltreatment and corporal punishment of students seriously violated the professional ethics of teachers. First of all, the teacher violated the professional ethics of teachers. As a teacher, we should be highly responsible for our work, be diligent and earnest, prepare lessons carefully in class, guide students carefully, and correct homework carefully after class. However, teachers have no patience to help students, "banging people's heads on the blackboard", which directly leads to students' weariness of learning.

Secondly, the teacher violated the professional ethics of teaching and educating people. Teachers should implement quality education, stimulate students' innovative spirit, be persuasive, be tireless in teaching others and teach students in accordance with their aptitude. Cultivate students' good conduct, stimulate their innovative spirit and promote their all-round development. The teacher didn't treat the students equally, fairly and democratically, and used very vulgar words to "scold" the students and punish them physically.

Third, the teacher violated the professional ethics of being a teacher by example. Teachers should know the shame of glory, be strict with themselves, set an example, be polite, and be modest and prudent. If this teacher wants students to learn math well, there is nothing wrong with being strict with them, but he must be strict and reasonable. Students "can't do the problem, the teacher will curse" and punish students. The teacher didn't set an example and didn't play an exemplary role.

Finally, the teacher violated the professional ethics of caring for students. Teachers should care about all students, respect their personalities and treat them equally and fairly. Be strict with students and be their mentor. And this teacher satirizes, satirizes, discriminates against students, punishes students, does not respect their personality, and fails to educate students with patience and love.