Common app research qn

If I have not published research papers/ entered competitions, etc, but have done reasonably worthwhile research (I worked on three projects) over the last 2 summers, should I write a paragraph about my work in the “Additional Info…” section or should I leave it out? B/C The colleges I’m applying to only want supplemental research abstracts uploaded if the work is “unsually advanced” which mine is not. Thanks a lot.