Don't Just Pet Your Chia is the title of an article published in 1995 (Science Activities 32(2):8-12) by botanist David Hershey. The article includes lots of great information about the history of chia seeds and several classroom activities including experiments testing tolerance to salinity and something called a "sponge pyramid."
Under the Fair Use Provision of Copyright Law, and with permission of the author, this article can be downloaded here.