The cotton brief soil lab. Used to illustrate soil health and microorganism density in soil. Awesome and weird so your students will talk about it forever. Follow the link for the full description of the lab. Andy Jensen - www.OneLessThing.net
This is a thermal energy lab based upon 3rd grade (Georgia) teaching standards. Photos detail the experiment procedure. Included are 2 pages that may be used as student handouts. The first page provides a brief reading passage and the experiment supplies and procedures.