Gardening in raised beds has been a common practice for centuries. "Raised" means the soil level in the bed is higher than its surrounding, and "bed" implies it is small enough to work from the walkways.
Digging in the dirt gives youth a feeling of accomplishment
Try to imagine using garden tools out in the garden and yard if you couldn't see well.
Volunteers give back by educating the public
Late summer and fall are critical times for proper pasture management. Check out this fact sheet and begin to understand plant and root growth in the Fall.