Arlington and Alexandria 4-H programs combined to celebrate Columbus Day by participating in the Maps and Apps science experiment. 4-Hers ages 8-14 came out and learned about GPS and GIS principles met new friends and got a glimpse of what 4-H can offer in their local communities. Arlington County Forester Vincent Verweij provided a brief presentation on how he utilizes GIS technology as a part of his job and showcased a hand-scrupled clay model of the park where are event took place.