I noticed this by accident, actually. Not in a classroom, not in some productivity article, just talking to my flatmate about a show I’d watched. Halfway through explaining the plot, I realized I understood it better than when I was actually watching it. Which is odd, right? You’d think watching = understanding. Apparently not always.
That’s basically the whole idea behind learning by teaching. You think you know something until you try explaining it out loud to a real person, and then suddenly you’re like… wait, do I actually get this?
Okay, so here’s the weird part
Most of us assume reading something twice or highlighting a textbook means we’ve learned it. But that’s more like recognition, not real understanding. You recognize the sentence when you see it again. Recognizing isn’t the same as being able to rebuild the idea from scratch in your own words.
Learning by teaching forces the rebuild. There’s no skipping it. You either can explain the thing or you can’t, and the gaps show up immediately, usually mid-sentence, which is embarrassing but also kind of useful.
I’ve had this happen while trying to explain compound interest to my cousin. It sounded simple in my head. Then I opened my mouth, and it fell apart around word twelve.
I tried this without meaning to
A few months back I had to explain a project brief to a junior at work. Nothing formal, just a five-minute walk-through. I thought I knew the brief cold. I did not. There were three assumptions I hadn’t questioned, and I only caught them because she asked, “Wait, why though?” at the wrong or, honestly, the right moment.
This is sort of the whole mechanism behind learning by teaching. Someone else’s confusion becomes your mirror. You can’t hide from a blank stare the way you can hide from your own notes.
What’s actually happening in your head
Okay, I’m not a neuroscientist, so take this loosely, but from what I understand, when you explain something, your brain has to pull the information back out actively instead of just sitting with it. That pulling-out process (some people call it retrieval practice) seems to stick better than passive review. Rereading is comfortable. Explaining is uncomfortable. Uncomfortable seems to be doing more of the actual work here, weirdly enough.
There’s also the pressure of an audience, even a small one. One person nodding along changes how carefully you organize your thoughts. Alone, you can be vague and get away with it. With someone else listening, vagueness doesn’t survive very long.
The friend test
I sometimes call this the “explain it to your friend who knows nothing” test. Not because friends are dumb mine definitely aren’t but because explaining to someone with zero background strips away all your shortcuts. You can’t use jargon. You can’t assume they’ll fill in gaps. You have to actually build the idea from the ground floor up.
This is where learning by teaching becomes almost painfully honest. If you can’t simplify it, you probably don’t fully own it yet. I’ve said this to myself more times than I’d like to admit, usually right after failing to explain something I’d sworn I understood five minutes earlier.
Why writing notes doesn’t do the same thing
Notes are static. They sit there. You wrote them once, they don’t talk back, and they don’t ask follow-up questions. Teaching, or even just pretending-teaching, like talking to an empty room, which sounds strange but works, forces a kind of back-and-forth even if it’s imagined.
I used to think good notes were the end goal. Now I think they’re just raw material. The actual learning seems to happen later, in the explaining part, not the writing-it-down part. Which honestly contradicts a lot of study advice I grew up with. Highlight this, rewrite that, and color-code your notebook. None of that made me understand anything faster than badly explaining a concept to my mom over dinner.
Small tangent, this is probably also why teachers often say they only really learned their subject after they started teaching it. Not a coincidence.
Does it actually work for everything?
Not sure, honestly. I think it works best for stuff with some structure, a process, a cause-and-effect chain, or an argument. Explaining pure memorization, like a date or a name, doesn’t need the same depth. There’s nothing to reconstruct, just recall.
Related: How to Improve Memory and Recall in Everyday Life
But anything with logic in it, how something works, and why one thing leads to another that’s where learning by teaching really earns its place. You’re not just remembering words, you’re rebuilding a structure, and rebuilding forces your brain to notice weak spots.
I’d guess this connects to why some people swear by the teaching effect as a study method, though I’ve also seen it used loosely, almost like a buzzword. Doesn’t make it less real, though.
The slightly annoying bit
Here’s the annoying part: this doesn’t work if you fake it. If you just recite memorized lines without actually engaging, you get none of the benefits. It has to feel a little effortful. A little shaky. That shakiness is basically the signal that your brain is doing something instead of coasting.
I think that’s why learning by teaching feels harder than just studying. It is harder. That’s kind of the whole point, even if it’s not a fun thing to hear.
Related: Biohacking for Better Productivity: Science-Backed Habits That Actually Work
So what do you actually do with this
Simplest version: after you learn something, try explaining it to someone. Doesn’t need to be formal. A rubber duck, a pet, your phone’s voice memo app, whatever. The point isn’t the audience, it’s the act of explaining to learn something without leaning on notes.
I’ve started doing this with articles I read for work. Read something, then try summarizing it out loud to no one in particular. Feels silly. Works though. And somehow talking it through, even badly, sticks longer than three rereads ever did.
Anyway, not a perfect method, not magic, but it’s one of those rare study tricks that actually holds up when you test it on yourself instead of just reading about it.
FAQs
- Does explaining something out loud really help you remember it better?
Yes, mostly because it forces active recall instead of passive review.
- Do I need a real person to explain to, or can I just talk to myself?
Talking to yourself works too; the key part is the retrieval, not the audience.
- Why does teaching something expose gaps in understanding so fast?
Because you can’t fake structure out loud the way you can on paper.
- Is learning by teaching useful for memorizing facts too?
Less so it works best for concepts with logic or cause-and-effect, not raw memorization.
- How soon after learning something should I try explaining it?
Pretty soon after, while the material’s still fresh enough to test yourself on.
Leave a Reply