"Is this class easy?"

Translation: この授業は易しいですか？

[poisonenvy]

この授業は易しいですか。

[Edikan2]

What is the difference between やさしい and かんたん?

[Oni]

Semantically? In this case they both mean "easy".
In other cases, yasashii carries meanings of "light, kind, relaxing"
and kantan carries meanings of "simple, not complex or difficult"

[Dennis507268]

From what I gather saying the class is やさし gives the impression that the class is easy in the sense that it's less strict, more laid back. While かんたん would be easy in the sense that the material is more basic.

[Mercedes226780]

やさしい is an adjective and かんたん is a noun. Both mean easy and both work in this sentence :)

[V2Blast]

簡単（かんたん) can also be used as a な-adjective.

[kiiin2]

Is やさしい really suitable here? I think かんたん would suit better.

[Woo877240]

Both are okay

[Oni]

Semantically they both mean the same here.

Syntactically, they also both take a copula in the polite form here.
If it was informal, however, you could not put "da" after yasashii, only after kantan.

It's a bit complicated but Japanese doesn't have adjectives per se. "adjectives" that end in "i" act like verbs. Other "adjectives" are nouns that can modify things if you add "na"

[criss0751]

Isnt やさしい kind? Like in being kind to someone?

[HeiwaZukiNaHito]

It can have both meanings depending on the context of the sentance

[Oni]

Speakers often drop the "ha" in quick, informal conversations like this. But Duolingo is correct that "ha" is proper grammar for writing.

[Dylan_Nicholson]

Why not この授業は易しいの？

こちらの授業は易しいですか？

このクラスは簡単なの？

(None are accepted, pretty sure they're right, so have reported. It accepts the first one without the final の)