amortizar

14:39 Apr 30, 2019 

I rejected "recover" or "recoup" when I first looked at this because I mistakenly got the sense that it was to do with "spreading out" the familiarisation time over a number of sessions. I've come around to your idea, though I still think it's slightly off-the-mark (albeit this is no more than a quibble). "Amortizar" doesn't strictly mean "sacar rentabilidad", though it does mean "to redeem" an investment, i.e., recover the original money you had invested in a company's shares or capital, whether it be at a loss or a profit.
So it's not quite saying that it's an investment that "pays off", (although I suppose this is implicit here!) but more that you get this time back again later on (redeem it), presumably through efficiency gains.
Granted, it's not much of a distinction, just that your answer threw me slightly when you mentioned "sacar rentabilidad".

14:14 Apr 30, 2019 

I suppose it might mean delays in the sense that it takes the teacher so long to master an unfamiliar ICT that he/she is not ready to implement it in the classroom as soon as originally planned; its implementation is delayed.

14:09 Apr 30, 2019 

And I think "retrasos", rather than "delays" as such (falling behind schedule), simply means taking a long time: tardanzas, if you like.

14:06 Apr 30, 2019 

PS. By the way, I don't understand how "amortizar" can mean "disminuir", decrease or get shorter.

14:04 Apr 30, 2019 

I'm sure the idea must be that it takes a long time to prepare a session at first but once you've done it you can do it again much more quickly. It's a phenomenon familiar to any teacher: when you start teaching, lesson preparation takes a long time, but you reap the rewards later when you repeat the course and have everything already prepared, reusable with at most minor changes. The financial metaphor is investment rather than debt: you invest a lot of time at the beginning but you get the returns later.

13:20 Apr 30, 2019 

... any delays ... will probably be made up for / recovered as the number of sessions increases.

12:02 Apr 30, 2019 

In my opinion, since 'amortizar' has almost one meaning, and that is what Charles has posted, you should investigate, if possible what Jose Llorente meant when he says 'amortizar'. All meanings refer to pay off a debt, or recoup the value, either in Spanish or English.

06:41 Apr 30, 2019 

... they highlight that the delays will probably be reduced as the number of sessions increases.

03:58 Apr 30, 2019 

I think it may be a synonym for "disminuye".