授業の基礎はシンプルです

Meaning
the basis of the lesson is simple

Vocab used in this sentence

授業
class, lesson, tuition, teaching
to, of
基礎
foundation, basis, basic, underlying, cornerstone, fundamentals, base
a, the, is, am, are, will
シンプル
simple, simplicity, plain, simply, basic, simplify
です
is, be, are, am, that, away