On a recent chilly morning, bundled-up kindergarten students at Star Child Nature School in Medford were collecting tree sap to make glue for handmade ornaments. Other kindergartens were nearby climbing a tree, while the private school’s preschoolers were exploring the Burlington County campground with their teachers, rolling down a huge sandhill and jumping in piles of leaves. And near the school’s entrance in the heart of the Pinelands, first and second graders were manning a hot chocolate stand to raise money to buy bean bag chairs for their open-air classroom. The students were not outside…
