SOME GUIDELINES AND NOTES FOR USING IN , ON , AT

in - use "in" for spaces with liminations. Use "in" for enclose areas.
example : in FRC, in the box

on- use "on" for surface. Use on for spaces within a larger area.
example : on the table

in - use "in" for enclosed spaces. This applies to both physical space and time.

on - use "on" for surface. This applies to both physical space and time.

at - use "at' for locations. This applies to both physical space and time.
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Use "on" with : street names, days of the week, dates, specific time frames, holidays

Use "in" with : names of cities, towns, states, province, countries, years, months, specific weeks, large comfortable chairs.

Use "at" with : street names and numbers, specific times, locations that are not in view when speaking, at a table
example.: I live at 502 Walmart street.

note : in the house , at home

note : at Joe's house - use "at" for locations that are not in view at the time of speaking.
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We can say "in bed" even though "bed" is a surface.

We say "on the bed" when is used for something other than sleeping.

They're sitting on the bed. -bed - thought of as surface when used as a seat.

Hellen is still in bed. - bed-thought of as an enclosed area when used for sleeping

They are sitting at the table.

table - location.

They are sitting on the table.

table - surface.

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