YOU SAID:

math class is very boring

INTO JAPANESE

数学の授業はとてもつまらない

BACK INTO ENGLISH

Math classes are very boring.

INTO JAPANESE

数学の授業はとてもつまらない。

BACK INTO ENGLISH

Mathematics classes are very boring.

INTO JAPANESE

数学の授業はとてもつまらない。

BACK INTO ENGLISH

Mathematics classes are very boring.