glance at (someone or something)
To look at someone or something very quickly and discreetly. That boy just glanced at you again! I think he likes you! OK, I only glanced at the map, but I'm pretty sure we're lost!
glance at someone or something
to look quickly at someone or something. Sharon glanced at Todd to see if he looked as if he was ready to go. I glanced at my watch and realized how long all this had taken.