"Take a look at this..." and "Give a glance at" are both the opposite of "closely read" or "studied extensively". However, the 4-word phrase is wordy. It would be shorter to say "skim" or "skimmed", or just "glance" or "glanced".
He barely glanced at my drawing.
I skimmed the student's paper.
glance
It can be, meaning a quick glance. But it is also a verb meaning to peep or glance furtively.
She took a quick glance at the clock before diving back into her work.
give a glance at, give a peek,
Backward glance
at a glance
backward glance
missed the second glance
backwards glance
glance glance
Glance IS correct.
The verb "to glance" is typically used on its own to describe a quick or brief look at something or someone.