Learn to bake sweet yeast rolls, cinnamon rolls, breakfast breads, biscuits and scones in a hands-on baking class with Chef Tom. 10:30am-2:30pm at Herrington on the Bay, Rose Haven. $75; rsvp: 410-741-5101; www.herringtononthebay.com.
Learn about these amazing creatures, the threats they face and how you can help; then, build a bat box to take home. 2-3pm at Merkle Visitor Center, Upper Marlboro. $8; rsvp: 301-888-1377; email@example.com.
Grades 6 thru 12 learn about the myriad of careers connected with Chesapeake Bay; pre-registered students eligible to win two grand prizes. 1-4pm at Annapolis High School: http://bitly.com/2014cfstudents.