instructivein‧struc‧tive /ɪnˈstrʌktɪv/ AWL adjective 
- Lectures must be interesting as well as instructive.
- The book is filled with instructive drawings.
- The books are designed to be both entertaining and instructive.
designed or intended to teach something► educational educational books, games, television programmes etc are designed to help you to learn something: · a shop selling educational toys for 7- to 11-year-olds· a leading publisher of educational books and software
► instructive providing a lot of useful information, explanations, and knowledge about something: · Lectures must be interesting as well as instructive.· The books are designed to be both entertaining and instructive.
► learning use this about books, methods, activities etc that are intended to teach people something: · They stock a wide variety of learning materials for younger students.· How can we make the most of the Internet as a learning tool?
ADVERB► most· Our most instructive anecdote for this is Gregory's account of the new taxes instituted by Chilperic in 579.· It is most instructive to see how top players distribute their thinking allowance during the course of a game.· And it was really most instructive.
► particularly· The chronology of events in this instance is particularly instructive.· The case of Wal-Mart is particularly instructive.
► very· Learning the meaning of verbal categories from scratch is difficult and time-consuming but it is very instructive.· It could be very instructive because of its several formats and a varied history.· In this context the situation which arises when a person dies is very instructive.· However unpleasant these flows are to scramble over when cold, it is very instructive to watch them when hot.· Watching him and Peter Lilley, the new overseer of the poor, could be very instructive.
nouninstructioninstructoradjectiveinstructiveinstructionalverbinstructadverbinstructively
Thank you, that was very instructive.