The phrase "a practical lesson in" is correct and usable in written English.
It can be used when referring to a teaching or learning experience that provides hands-on or applicable knowledge in a specific subject or skill.
Example: "The workshop provided a practical lesson in effective communication strategies that participants could apply in their daily interactions."
Alternatives: "a hands-on lesson in" or "a useful lesson in".
An English lecture calls for a different mode of regulation than a practical lesson in surgery.
Amélie got to meet day-old chicks in the hatching area – a practical lesson in where eggs come from.
On Saturday we got our first taste of good wave breaking conditions, along with a practical lesson in the fetch formula.
We designed a number of activities, applied during a practical lesson, in which students evaluated some of their perceptions and attitudes towards noise, and recorded their hearing capacity.
The answers provide fans with a practical lesson in physics.
Dreidel is a practical lesson in discovering the value of fairness both to oneself and to others.
Being a junior doctor with a cancer diagnosis hasn't just been a handy practical lesson in empathy.
When one of Mr Vanhonacker's American students, who had been sent to complete a project in a "difficult" region, phoned him to express horror at the business environment she had encountered, he told her she was simply learning a practical lesson that would stand her in good stead in her career.
If I were him, … I'd claim that I was teaching my students a valuable practical lesson in economics, by illustrating how regulatory power (the power to assign mandatory textbooks for a required credit class, and to smother secondary markets by frequently printing and requiring new editions) can lead to rent-seeking and the creation of effective monopolies.
For there is another lesson in Lascaux II – a practical lesson that could be followed more widely.
Each workshop also included a practical lesson where physicians assessed disease activity in RA by using composite scores: the Disease Activity Score 28 joints (DAS 28) [ 50] and the Clinical Disease Activity Index (CDAI) [ 51].
