AHOY! Arrrrgghh you ready for fun and engaging day? These 11 different pirate STEAM based centers and activities work with numbers to 100. They can be used to celebrate the 100th day of school or ANY day that you would like to have a pirate adventure. The activities are all pirate based and most of them are focused on counting, writing, and identifying numbers to 100. This can be a special day or centers spread out over a week. THE BIG IDEAYour students will set sail on a pirate adventure visit