Here's an investigation from NOAA that lets your students learn about the different kinds of corals and celebrate their learning with cake. Have your students look at pictures of the different kinds of coral and help decide which corals they want to add to your reef. Students can find or draw pictures of different corals, share them with the class and vote on which ones to include on their reef cake. Yep, it could be messy. It's sure to be fun, and it's definitely going to be yummy!