'learn by observing' is correct and usable in written English.
You can use it when you want to express that someone has learned something by watching, seeing, or noticing something. For example: "I learned English by observing my parents speaking to each other."
That's something you just learn by observing.
"This could help explain how people learn by observing others".
In contrast, sitter children are careful and astute, and tend to learn by observing instead of by acting.
Children learn by observing how their parents, teachers and other adults react to moral problems and by showing emotions like sadness, happiness, anger and disgust.
Children, the argument goes, learn by observing and then emulating — which becomes a problem when films depict visceral thrills without considering their human costs.
Mr. Fehlbaum hopes it will help them to make bolder, more nuanced color choices and that the company can learn by observing their response to the VitraHaus.
AOT is based on action observation, whereby new motor skills can be learnt by observing motor actions.
I've learnt by observing best practice and also by doing.
Natural science belonged not to the trained and pedigreed biologist, but to the passionate amateur: they were "naturalists", not biologists.Butterfly people learned by observing, thinking and arguing.
But the reason his tunes have lasted so well, says Morricone, is that the musical ideas are complete in themselves: "I learned by observing the use of Mozart and Bach and Mahler in movies.
"From that moment I realised Rusty was brilliantly intelligent because, even though I wasn't teaching him, he'd learned by observing my teaching of Buds".
