A hands-on lesson that helps students understand how to evaluate environmental health problems. Based on the ToxRap curricula for early elementary education it is taken from The Case of the Green Feathers.
However, it was adapted in such a way that it is both educational and entertaining for all grade levels.
This lesson is presented frequently as a demonstration of the basic principles of toxicology.
Teacher Guides / Student Worksheets
(In pdf format. Requires Adobe Acrobat Reader)
188 kb-download Lemons and Onions Instructions and Worksheet