Looking for a good phenomenon based activity for grades 6-12?  Try NOAA's Estuary Education's "The Great Oyster Mystery."  This activity centers around an actual event and students must use actual data to solve this real life mystery.  You can find the curriculum at :https://coast.noaa.gov/estuaries/curriculum/the-great-oyster-mystery.html or download the .pdf's below.

Thanks, Adam. Great way to start the new year!