Question

Which word in the sentence is the indirect object?

Throughout the project, the scientists have taught the students some new methods.

Answer 1

students is the indirect object

find the verb....have taught

scientists have taught what ? new methods -- direct object
to who ? students -- indirect object

Answer 2

yes, "students," because "taught," like "gave" and "told" and some others has an implied "to"

e.g., I gave (to) him a book. I gave INDIRECT a DIRECT.