Students, including Tre Buckner, 7, in front, worked while sitting on their stability balls Friday in Rae Anna Fields' second-grade class at Glenn Marshall Elementary School in Richmond.  Photo by Charles Bertram | Staff
Students, including Tre Buckner, 7, in front, worked while sitting on their stability balls Friday in Rae Anna Fields' second-grade class at Glenn Marshall Elementary School in Richmond. Photo by Charles Bertram | Staff Herald-Leader
Students, including Tre Buckner, 7, in front, worked while sitting on their stability balls Friday in Rae Anna Fields' second-grade class at Glenn Marshall Elementary School in Richmond. Photo by Charles Bertram | Staff Herald-Leader