Unfortunately, the activities can make students hurt so the teachers must to know how to say classroom language for letting them far away from danger.
Here are some Classroom language: Carefulness for protecting the students.
“Make sure you don’t touch/ knock over the OHP/ fish tank”
“Don’t touch the wall too hard (or you could go through!)”
“(Be careful.) There’s a sharp corner here”
“Remember that someone hurt themselves on this/ in this game last week”
“If you push, someone will get hurt”
“You’ll hurt yourself if you do that again”
"Safety first"
"Save yourself"
"Don't do that/this"
"Please move carefully"
Safety first of your students is the most important that you must aware.
Thanks for reading.
Tatiya014 3EN