![Smithsonian Environmental Research Center: Forces of Change: Worm Watch [Pdf] Lesson Plan](https://d15y2dacu3jp90.cloudfront.net/images/attachment_defaults/resource/large/FPO-knovation.png "Smithsonian Environmental Research Center: Forces of Change: Worm Watch [Pdf] Lesson Plan")
Smithsonian Institution
Smithsonian Environmental Research Center: Forces of Change: Worm Watch [Pdf]
Over a period of a week to ten days students observe the impact worms have on soil. Seven easily obtainable objects are all that is needed to complete this activity. 45 minutes are required for setup and some additional time for...