Duolingo

Some learning tricks/techniques that Duolingo uses:

• the initial levels of a lesson are mainly recognition-based, so cognitively easier; they build up confidence and familiarity with the material without being too difficult
• later on, you need to do stuff like type in the words using cyrillic letters. This is harder, but by this time you've encountered the word multiple times so it's not too hard.
• in many contexts, you can hover over words to get their definitions, so you're never totally lost.
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• there is no explicit instruction of grammar rules -- you just pick it up by trying to understand more and more complicated sentences. This makes it similar to "tutorial modes" in some video games, or puzzle games without explicit instruction (like The Witness).
• I've noticed that sometimes, if I get a sentence almost correct but miss one phrase, that phrase will show up isolated as a phrase in a following screen. I'm not sure if this is done on purpose or if I just happen to get the most difficult phrases wrong.
• Another pattern I've noticed is that if I get a Russian -> English translation problem wrong, then that Russian sentence will often show up in a bit as an audio -> Russian text problem. I guess this is to build familiarity with the problem I missed.

Above, I am not including "gamification"/achievements stuff that Duolingo does (e.g. badges, scores, leader board). I think these are dumb and I don't think I benefit from them (other than the streaks counter, which does motivate me to never miss a day).

I don't like how the later lessons in duolingo are much longer/have way more components but count for the same amount of experience. when i am feeling tired i feel tempted to just do some easy lessons to keep my streak, instead of doing more of the new content (which i feel is a better use of my time).