"Το υλικό του κουταλιού."
Translation:The material of the spoon.
There has been a few sentences now in this section that don't make sense grammatically in english. You don't say the colour of the elephant is grey or the material of the spoon. Its simply the Elephant is grey or the elephant's colour is grey. Or in this case, the spoon's material. These are just literal translations that are not used in regular conversation. Furthermore, they should not be marked wrong if a different more correct answer is chosen. Still a lot of work that Duolingo needs to invest in Greek to improve it. But, at least we have this available.
"the spoon's material" is one of the accepted answers which I'm assuming you tried and had rejected. We can't see what you wrote so have no way of knowing. You should have made a REPORT or provided a screenshot. If you have a "more correct answer" please share it so we can add it.
If it wasn't accepted it means you had a mistake in the sentence. You should have made a report.
TIPS TO MAKE LEARNING EASIER + HOW TO REPORT A PROBLEM…..
https://forum.duolingo.com/comment/22424028And check out the Greek Forum here with more links. https://forum.duolingo.com/topic/936
If you have a non-literal translation for any of the exercises please contribute them to the course. We have regulations to determine which vocabulary we are allowed to use at each level which makes it hard to come up with better translations so we can clearly use all the help we can get.