From the National Oceanic and Atmospheric Administration’s National Ocean Service (NOS) Website:

Discovery Kits describe the basic scientific principles underlying the applied science and activities of NOAA’s National Ocean Service (NOS). Designed for educators and students at the high school level, they are written in non-technical language, and focus on the themes of oceans, coasts, and charting and navigation. …

A quick look turned up Discovery Kits on corals, currents, estuaries, and more.

Click HERE to jump to the NOS page on their Discovery Kits.