> what is fulfilling in your job as a math teacher?

Many things. The most fulfilling for me is taking a student from hating maths to enjoying it. Or when they realise that in fact they're not bad at maths. Students changing their opinions about themselves or about maths is such a fulfilling experience that it's my main motivation.

Then working with students who likes and are good at maths and challenging them a bit to expand their horizon is a lot of fun.

> When students learn?

At a high level yes (that maths can be fun, enjoyable, doable). Them learning "stuff" not so much, it's part of the job.

> When they're assigned grades that accurately reflect their performance?

Yes but not through a system based on counting how many mistakes they make, like exams do. If I can design a task that enables a student to showcase competency accurately it's great. A task that enables the best ones to extend themselves (and achieve higher marks) is great.

> When they learn something with minimal as opposed to significant effort?

Not at all. If there is no effort I don't believe much learning is happening. I like to give an opportunity for all students to work hard and learn something in the process no matter where they start from.

I only care about the grade as feedback to students. It is a way for me to tell them how far they've come.