Geocaching 101
Jay Cooke State Park
4-5 p.m. Friday
Learn how to search for caches with a global positioning system. Then, explore the park for hidden caches. GPS units available at the interpretive center. (1-218-673-7006, mndnr.gov)
Walking stick
Whitewater State Park
12:30-2 p.m. Saturday
Transform buckthorn, an invasive species, into a practical tool you can take home with you and learn how to stop the spread of invasive species when you're hiking and fishing. (1-507-932-3007, mndnr.gov)
Focus on turtles
Wild River State Park