The phrase "a supervised activity" is correct and usable in written English.
It can be used to describe an activity that is monitored or overseen by someone, typically for safety or educational purposes.
Example: "The children participated in a supervised activity at the park, ensuring their safety while they played."
Alternatives: "an overseen activity" or "a monitored activity".
We are located only four blocks from the local high school, and our kitchen will open at 3pm, to offer these growing kids satisfying after-school snacks in a safe, supervised activity of which their parents will approve.
Here's a nudge from the real Rahm Emanuel: "I want every child in Chicago, if they have academic interests, athletic interests or artistic interests, to have an adult supervised activity where their own self-esteem can find a voice.
Two hours a day supervised activities include treasure hunts and pyjama parties, while teenagers have their own arcade and music area.
Every medical activity that was noted as (3) (performed under supervision) was counted as supervised activity.
The term "job finding club" means a job search workshop which includes a period (1 to 2 weeks) of structured, supervised activity in which participants attempt to obtain jobs.
The one outlet he condoned was their participation in Bolivian dance groups, a supervised cultural activity.
The intervention included regular contact with the dietician and a supervised physical activity program.
The intervention group will receive a culturally targeted intervention consisting of dietary counseling using motivational interviewing and a supervised physical activity program.
Without them, many organizations would be forced to cut or cancel summer services, which provide supervised activity for children of working parents.
Intervention: The experimental group received constraint-induced movement therapy (defined as restraint of the less affected upper limb during supervised activity practice of the more affected upper limb).
