It can be hard, being the 'genius' in a family made up of geniuses.
Tim knows he's smart. He's always been smart. Not in, like, an arrogant way - he's not Damian, heh - but more like, just... know your strengths? As Robins go, Dick had the heart, Jason had the muscle, he had the brains (and Damian breaks the metaphor down entirely). The point is, he's the sort of smart that gets him called smart by a whole bunch of other really smart people. And that... well, it's both a blessing and a curse.
Whenever somebody in the family needs academic help, Tim is the go-to. The default. He's, like, the Manor tutor. He doesn't hate it! He's glad to help his family. Really. He is. But also, it gets kind of tiring sometimes to always end up playing teacher.
He's not sure he's the best teacher, is the thing. When something makes sense to him, and doesn't make any sense to someone else, sometimes he has trouble bridging that gap. Sometimes he gets impatient, frustrated. Sometimes it turns into some stupid kind of argument. And then he feels bad, and whoever he's teaching is left even more frustrated at the thing they're struggling with, and, well, it's a cycle.
So he's doing his best to keep his cool, he really is. Even though he was already having a bit of a stressful day, you'd asked for help - and he does want to help. He draws in a deep breath, lets it out slowly, and takes another gulp from his coffee mug. Then he sets it down, huffs out a sigh, and leans to tap the book on the desk in front of the both of you. "Okay. Right. Let's start from the top. Just... tell me what's confusing you."