Biking

• C&O Canal
  [September 2006]
• NCR Trail
  [April 2004, May 2004, July 2005, October 2005]
  [July 2006, September 2006]

Camping

• Assateague Island National Seashore
  [October 2004, November 2005, November 2006]
• Blackburn Cabin
  [February 2004, November 2004, February 2006]
• Cape Henlopen State Park
  [July 2005]
• Elk Neck State Park
  [April 2006, August 2006]
• Karen Noonan Nature Center
  [December 2005]
• Marsden Tract Campground on the C&O Canal
  [May 2004]
• Pokomoke River State Forest and Park
  [May 2005]
• Tuckahoe State Park
  [September 2006]
• Woodberry Crossing
  [August 2004]

Canoeing

• Alliance for the Chesapeake Patuxent River Sojourn
  [June 2006]
• Loch Raven Fishing Center
  [May 2004, July 2006]

Caveing

• Indian Echo Caverns
  [March 2004]

Farming

• Chesapeake Bay Foundation's Clagett Organic Farm
  [June 2004]
• Clarks Elioak Farm
  [June 2004]
• Cromwell Valley CSA
  [October 2004]
• Kinder Farm Park
  [June 2005, October 2006]

Fishing

• Loch Raven Reservoir
  [May 2004]
• Patuxent National Wildlife Refuge
  [June 2005]

Hiking

• Gifford Pinchot State Park
  [March 2004]
• Great Falls Section of the C&O Canal
  [May 2005, May 2006]
• Gunpowder Falls State Park
  [October 2004, September 2006, October 2006]
• Gwynns Fall/Leakin Park
  [December 2005]
• Harpers Ferry National Historic Park
  [March 2005]
• Oregon Ridge Park
  [February 2004, March 2005, February 2006]
• Patapsco Valley State Park, Avalon Section
  [June 2005, February 2006]

Ice Skating

• Mimi Dipietro Family Skating Center
  [December 2004, December 2005, January 2006, November 2006, December 2006]

Kayaking

• Pokomoke River State Forest and Park
  [May 2005]

Orienteering

• City Orienteering in Canton
  [December 2005, December 2006]
• Federal Hill Neighborhood
  [September 2004]
• River Valley Ranch Corn Maze
  [October 2006]
• Southwest Baltimore City
  [March 2004]

Outdoor Education Tools

• American Visionary Art Museum
  [October 2006]
• Audubon Society Excursions
  [January 2006]
• Back River Wastewater Treatment Facility
  [May 2004]
• Baltimore Museum of Public Works
  [April 2006]
• Benjamin Banneker Park and Museum
  [March 2006]
• Brookside Gardens
  [August 2006]
• Carrie Murray Nature Center
  [December 2005]
• The Charles Theater
  [June 2004]
• Chesapeake Bay Environmental Center (CBEC) Educational Program
  [November 2006]
• Eden Mill Nature Center
  [March 2004, March 2006]
• Harpers Ferry National Historic Park
  [March 2005]
• Leave No Trace Principles
  [June 2005, December 2006]
• Maryland Sheep and Wool Festival
  [May 2006]
• The Museum of Industry
  [June 2004]
• National Air and Space Museum
  [January 2004]
• Oregon Ridge Maple Sugaring Demonstration
  [February 2006]
• Oregon Ridge Park Nature Center
  [March 2005]
• Port Discovery
  [April 2006]
• Smithsonian National Air and Space Museum (S. F. Udvar-Hazey Center)
  [April 2006]
• Snow Crystal Structure Lesson
  [March 2005, March 2006]
• Sparks Nature Center
  [July 2005]
• Washington, DC Natural History and Botanical Garden Museums
  [November 2005, March 2006]
• Winter Weather Survival Lesson
  [March 2005, March 2006]

Outdoor Service Projects

• Baltimore Recreation and Parks
  [August 2005, April 2006, November 2006]
• Patterson Park
  [December 2004]

Sailing

• Chesapeake Bay Foundation Baltimore Harbor Program
  [November 2004, June 2006]
• Living Classrooms Foundation Shipboard Education Program
  [October 2005]

Snowtubing

• Ski Liberty
  [March 2005, March 2006]

Swimming

• Druid Hill Park
  [August 2005]
• University of Maryland Baltimore County
  [March 2004February 2006]

Tubing

• Gunpowder River
  [August 2005]

Zoological Parks

• Washington National Zoo
  [January 2006, May 2006]