http://www.oregonlive.com/hg/index.ssf/2014/03/thumbs_up_for_green-thumb_scho.html This is a really cool article about elementary school kids growing a garden, and how their teachers use it as an interdisciplinary unit. The teachers incorporate math, science, and health lessons, all related to their garden! They are able to practice these subjects as a way to learn about them on a deeper level.