The Center for Improved Engineering and Science Education (CIESE) has developed this online project to allow students around the world to compare the organisms found in water samples they collect from local ponds. This year's project will run from March 15 - June 1. Classes will develop a hypothesis, collect data to be shared with other participants, analyze the shared data, and complete a final...

The Missouri Botanical Garden (MBO) hosts this site on duckweeds, the world's smallest flowering plants. Sections include Botanical Facts (anatomy through population growth), Duckweed Illustrations (numerous color images of duckweed), Experiments & Projects (check out the several interesting laboratory experiments), and Practical Duckweed (using duckweed to clean polluted water via...