Hello! I need help writing this sentence in Japanese.

"Let's fold origami!" How would I say this in Japanese? And if I were to say this to classsmates/other students in different grades, would I use formal or informal language?

Certainly! In Japanese, you can say “Let’s fold origami!” as follows:

Formal Language (for classmates/other students in different grades):
“Origami wo shiyou!” (折り紙をしよう！)
折り紙 (origami) means “paper folding,” and しよう (shiyou) means “let’s do.”
Informal Language (for close friends or peers):
“Origami wo yarou!” (折り紙をやろう！)
折り紙 (origami) still means “paper folding,” and やろう (yarou) means “let’s do.”