Question

When children draw cross-sections of
plants, they are:

1. intergrating science and art
(Or)
2. intergrating mathematics and science

Lordy. Surely you have some thinking on this, this question hardly stimulates the cerebral cortex. Did you mean integrating? Intergrating is something that happened in Mississippi :)

I will be happy to critique your thinking.

yes- sorry for the mispelled word
"integrating"

Just not real sure what is meant by cross-sections of plants, but, I don't
think any math is involved.

No math is involved. Cross section of a plant stem is a drawing of a cross section, showing cells, and other structures.

http://www.phschool.com/science/biology_place/biocoach/plants/monocot.html