Learn all about how helicopters fly. In this take and make kit, you will create three different sized helicopters. Which one stays in the air the longest? Shortest? Sketch your ideal helicopter. All materials will be provided in the kit. Kits can be picked up at the P.D. Brown branch starting October 1st - October 8th, while supplies last. Limit five kits per household. Available while supplies last. For more information, please contact the P.D. Brown Branch at 301-645-2864. Curbside pickup is available upon request. To make a curbside request, please call the P. D. Brown Library at: 301-645-2864. One hour advance notice is needed for curbside kit requests.