Classified for credit

Maryland state park on the Pocomoke River — supports freshwater ecology, forest habitat study, and outdoor PE through paddling, hiking, and ranger programs.

Multi-state scenic trail corridor along the Potomac River — supports ecology, riparian geography, and physical education with ranger-interpreted natural history.

Historic Baltimore greenhouse conservatory housing tropical, desert, and Mediterranean plant collections — supports botany and plant-adaptation science.

Victorian-era conservatory at Druid Hill Park with tropical plant collections and outdoor gardens — plant biology, horticulture, and ecosystem diversity.

Howard County nature center with indoor exhibits and wooded trails — covers local ecology, watershed biology, and Maryland native species.

Regional park with forest trails, lake, and nature center — covers local ecology, watershed biology, and outdoor physical education.

Maryland state park in the Allegheny Mountains with lake-based freshwater ecology, forest biology, and outdoor education programs.

Maryland state park with forested trails and equestrian areas — covers Chesapeake region ecology, plant and wildlife identification, and physical education.

Chesapeake Bay shoreline state park — covers estuarine ecology, migratory bird observation, and Bay watershed geography with ranger programming.

Chesapeake Bay shoreline state park with youth group camping area — supports outdoor education, coastal ecology, and physical education programming.

Maryland state park on the Youghiogheny River — whitewater hydrology, riparian ecology, and outdoor education.

Outdoor sculpture garden at the Baltimore Museum of Art — sculpture in a landscaped setting; primarily a walking outdoor experience with art context.

Maryland state park with 16 miles of trails, a reservoir, and diverse wildlife habitats — supports ecology, watershed science, and outdoor physical education.

Seasonal public garden in Baltimore famous for large tulip displays — supports plant biology, horticulture, and phenology observation.

Chesapeake Bay watershed state park with trails and fishing — covers riparian ecology, Maryland colonial history, and outdoor recreation.

Rare serpentine barrens ecosystem in Maryland — covers specialized plant adaptations, soil chemistry, and the ecology of globally uncommon habitats.

Maryland state park centered on a reservoir — covers piedmont forest ecology, freshwater biology, and watershed conservation through trails and shoreline access.

Maryland state park along the Susquehanna River with historic mill sites, diverse wildlife, and riparian ecology — biology, conservation, and local history.

Susquehanna River state park with trails along the lower river — riparian ecology, watershed geography, and Chesapeake Bay tributary biology.

Waterfront discovery center at Mattawoman Creek — estuary ecology, Chesapeake Bay watershed, and local wildlife observation.

Maryland state park with forested trails, a mill pond, and creek habitats — covers Chesapeake watershed ecology, freshwater biology, and outdoor education.

Chesapeake Bay shoreline nature preserve with trails and beach access — covers estuarine ecology, tidal biology, and Bay watershed conservation.

Prince George's County nature center with live animals and trail access — supports wildlife biology, local ecology, and natural observation skills.

Large Prince George's County park with nature center, trails, and wetlands — supports ecology, wildlife observation, and outdoor PE curriculum.