Let the STEM begin! Just like real pufferfish puff up to stay safe, McPherson members made their own using balloons, baking soda, and vinegar. The best part? Watching their “pufferfish” inflate before their eyes! Way to go, STEM superstars! #BeGreatNV #BGCNV #GreatFuturesStartHere #STEM #McPherson #Napa #NapaValley