Working in An Elementary School

I started to work for an elementary school since Monday.
The junior high school I used to work for and this elementary school are not so far so I didn’t need to move.
Like the previous school, I will be working as an assistant teacher.
The main teachers will conduct the lessons and I will support some students who cannot follow the lessons.
I am in charge of mathematics and English for fifth and sixth graders.
The students will come to school starting April 8th, Monday.
I feel anxious because I am not sure if I can talk to the kids naturally.
This school year will be a good opportunity to have new experiences in my life.