i forget to write my homework down

i forgot  to write my homework on my  ntebook . so i didn't finishmy homework on weekends . yesterday i went to school ,my teacher was angry with me .he didn't allowed me sit on my chair instead of stand in class . so ,my classmates laughed at me all the time . i'm very wild ,so i had fightment with them .

but my teacher don't like sove problems by a fightment .he made me cry all day .what shoud i do?