"So, when we get this result you just have to add it with this one and it will give you the final result" Tim said, with a pencil in his hand while he explained math things to you.

You had stayed at home to study, but you didn't seem to care, since all you did was play with your pen, draw in your hand or look around you.

"are you listening to me?" He said in a slightly stern tone, looking into your eyes.