It’s time for that traditional rite of spring – tapping maple trees.  Take a guided walk to see various methods of collecting sap, and learn how to boil it down to make syrup.  Antique equipment for making syrup will be on display from the Waterloo Farm Museum, and maple products will be available for purchase.  Eddy Discovery Center, 17030 Bush Rd. in the Waterloo Recreation Area near Chelsea.   Contact the Center at (734) 475-3170 for more information.  Free admission.