"Eavesdroppers often hear highly entertaining and instructive things," he grinned.
"Eavesdroppers often hear highly instructive things," jibed a memory.
From Grandma Fontaine, who was belching frankly with the privilege of her age, to seventeen-year-old Alice Munroe, struggling against the nausea of a first pregnancy, they had their heads together in the endless genealogical and obstetrical discussions that made such gatherings very pleasant and instructive affairs.
There are no more uses of "instructive" in the book.
Show samples from other sources
And very instructive.
Rick Yancey -- The 5th Wave
"Let’s table that thought for a second, because that’s instructive, the fact that you were aware of the groups, but didn’t seek them out.