Currently, I am finishing my statement of purpose, which I need to write in order to apply to graduate programs. In my statement, I want to describe my teaching experience (for a semester, I taught a course in Mathematics for undergraduate students; the classes had a form of seminars). However, I don't want to use a word "teach", because it is used many times in the very same paragraph. I found two possible options. The first is to say:

For a semester, I gave seminars in Mathematics.

The other possible option is suggested by my friend, who studies at the US:

For a semester, I led seminars in Mathematics.

However, neither of these options sound right - according to Google, they are not actively used.

I would like to wonder, what is the common way to describe teaching experience in this case? How to formulate the sentence I mentioned without using the word "taught"?

Currently, I am finishing my statement of purpose, which I need to write in order to apply to graduate programs. In my statement, I want to describe my teaching experience (for a semester, I taught a course in Mathematics for undergraduate students; the classes had a form of seminars). However, I don't want to use a word "teach", because it is used many times in the very same paragraph. I found two possible options. The first is to say:

For a semester, I gave seminars in Mathematics.

The other possible option is suggested by my friend, who studies in the US:

For a semester, I led seminars in Mathematics.

However, neither of these options sound right - according to Google, they are not actively used.

I would like to wonder, what is the common way to describe teaching experience in this case? How to formulate the sentence I mentioned without using the word "taught"?