Simplify the following text for a Grade 9 native English-speaking person.
Original: Learning by teaching should not be confused with presentations or lectures by students , as students not only convey a certain content , but also choose their own methods and didactic approaches in teaching classmates that subject .
Simplified: Learning by teaching should not be confused with presentations or lectures by students , because they have to do much more . They have to choose their own methods and didactic approaches in teaching classmates that subject .