It's a crescent moon.

Student or Learner
May I know the simple names of the different partial eclipse of the moon for a kindergarten kid?
I know full moon and half moon. How about the name of the shape like the letter C?
Thanks.
It's a crescent moon.
You might want to read up on "waxing" and "waning", and "gibbous" too.
Remember - if you don't use correct capitalisation, punctuation and spacing, anything you write will be incorrect.
We also say new moon.