When 4-year-old Ravi, a student at a Baltimore nature preschool, saw a balloon floating across the sky recently, his first thought was one of concern for the birds. “He said, ‘Oh no, Mom, I’m scared,’ ...

Liam and his 3- to 5-year-old classmates sat around a large picnic table in the Bob Jones Nature Center and Preserve, feet dangling from the bench, as they learned about the life cycle of frogs.

A little rain doesn’t faze the Forest Hill Nature Preschool – or even a week full of gray, rainy days that left much of the region drenched and kept most people inside. On one such thoroughly rainy ...