The Index Eutαxia Swzein Dokei
Volume LXXV, No. 8
March 2014
Haverford, Pennsylvania - haverfordindex.com
Robotics: The Future of Education at The Haverford School Robotics is unrivaled in its demand as an extra-curricular activity; Manav Khandelwal ‘15 and Alex Sanfilippo ‘16 outline the large-scale plans administrators have for its integration into the school-wide curriculum.
the help of current Upper School physics and
Manav Khandelwal ‘15 and Alex Sanfilippo ‘16 engineering teacher Mr. Gerard Rooney and
I wouldn’t be surprised if, ten years from now, there is a Department of Robotics at The Haverford School, that is how big I think this thing is likely to be.” Headmaster John Nagl, the 9th Headmaster of The Haverford School, has a vision. He has had a vision since stepping foot into his cozy office on the first floor of Wilson Hall’s west wing, including planning the construction of a parking garage and new Middle School, which Brendan Burns ‘15 outlined in the February edition of The Index. Nothing, however, seems more vital to his vision of a future Haverford than dedication to improved excellence in STEM learning—science, technology, engineering, and mathematics. That improvement starts, in his view, with the integration of Robotics, and the computer programming and engineering skills that go along with it, into the daily life of every Haverford student. Before delving into plans to expand Robotics at Haverford, however, it is important to look at where the program started and what it has become. Mrs. Megan Connolly, currently the Director of Technology and faculty advisor to the VEX Robotics team at Haverford, has been the driving force behind the largest and most successful non-athletic extra-curricular organization in Haverford history. In 2002, due to a suggestion from one of her students, Mrs. Connolly started a Robotics team in the FIRST (For Inspiration and Recognition of Science and Technology) competitions with
a $6,000 grant from NASA. “UPenn gave us money and mentors, graduate students who came after school,” adds Mrs. Connolly. “They worked for free, to help with engineering principles and how to build a robot.” Then, around 2006, the team began to hit some snags. The massive robots needed for FIRST meant fewer kids could work on one at a time, and with 15 students now on the team, Mrs. Connolly felt that experiment had run its course. After a couple years of deliberating, she finally set her eyes on VEX, which allows more teams to build smaller robots, allowing for a more involved experience for every student. After a rough first season accompanied by a steep learning curve for the entire team, especially Mrs. Connolly, she “reached out to the community outside of Haverford to see if anyone knew of any mentors, and that’s when we got our college mentors, and they’ve been helping us ever since.” Always humble, Mrs. Connolly credits much of the Robotics team’s success to those mentors, especially departing Head Mentor Mr. Chuck Glick. That success has fueled an exponential growth in interest for the VEX team here at Haverford; starting with approximately a dozen kids in 2009, the number of Upper School students who came out for the team this year exceeded 40, with only 32 being allowed to join due to space limitations.
The Robotics team preparing outside of Ball.
Mohid Khan
Continued on Page 6
The Scoop on Haverford’s New WiFi Networks Brendan Burns ‘15 and Arnav Jagasia ‘16 explain the school’s new WiFi experiments and what impact they have had and will have on the Haverford experience. Brendan Burns ‘15 and Arnav Jagasia ‘16
Beginning this fall, Haverford is implementing its new one-to-one program, which, as The Index chronicled in January, mandates that every student has a “computing device” on his person at school in an effort to usher in a 21st-century education that mirrors the technology-driven nature of today’s workplace. The new 1:1 program, however, will have far-reaching consequences outside the classroom. The Haverford student body will be armed to the teeth with laptops, tablet computers, and smartphones to a greater degree than ever before; this proliferation will put an even greater strain on the alreadytroubled Wi-Fi networks. As Fifth Former Jack Henderson reported earlier this year, 1:1 policy architect Mr. Joseph Sweeney estimates that, only a couple years in the past, only about one-fourth of Haverford students brought a device to school. That number is now closer to three-fourths, and will only continue to rise. The Index spoke to those in the Technology Department, who are tasked with matching the increased device load with a more powerful wireless infrastructure, to find out more. Just how much will Upper School device
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load increase come September? Network Administrator Paul Steinberger estimates an increase from about two devices to student to three or four, resulting in a total increase in the number of wireless machines in the Upper School from about 1,000-1,200 to roughly 2,000 devices. This increased load will mandate a “full tear-out” of the existing infrastructure come summer, says Steinberger. Director of Technology Megan Connolly gauges that, when the new Wilson Hall was constructed six years ago, the number of wireless devices in the building was around 200-250. “At that time,” Connolly says, “the Wi-Fi technology was state-of-the-art.” When the school was first built, an engineer from HP installed several Access Points (APs – the devices that allow devices to connect wirelessly) around the school; these access points were mostly placed in hallways to provide a wide range of coverage. As Haverford’s device load gradually rose, however, students began to notice slow connectivity. The Tech Department has made many changes that have kept the Guest network usable amid a growing device load. Most recently, the cable that powered the wireless connection, which “was only capable of about a tenth of the
Cyrus Rostami ‘17 investigates the origins of the new Athletics Department sports credit, and what activities fulfilling that credit entails.
bandwidth that the network is capable of,” was replaced according to Mr. Steinberger, leading to a significant speed boost. The changes planned for next fall, however, are much more extensive. First, the School Wi-Fi connection will be upgraded from 802.11n to the newest 802.11ac technology. This will be done by replacing the school’s wireless APs with newer models. As students have likely noticed this month, Tech Department is currently testing APs from three different vendors - Aerohive, Aruba, and Meraki (the latter owned by Cisco) - to replace the 25 or so access points in the Upper School. To ensure that the two trial networks do not create interference between each other, the Aerohive network is built to service the library and language wing, while Meraki provides connection in the Science wing. There are two methods for placing access points to ensure the strongest possible connection. The first, “coverage-based” method, is based on spreading access points efficiently to cover the greatest area possible. The network administrator client allows the Tech Department to generate “location heatmaps” that show, on a satellite map, the area of the building covered by each access point. A second method (“density coverage”) focuses on saturating common spaces (such as Ball Auditorium) and classrooms with signal, using multiple access points, to ensure that a high number of students can
access data in the same area without dividing bandwidth among too many devices. A combination of these two methods will be used to strategically place the new 802.11ac access points throughout the Upper School. As this article is printed, Haverford is arranging a “wireless survey,” in which a professional will survey the School’s wireless infrastructure and make recommendations as to where the new APs should be placed in a way that maximizes coverage, saturates certain areas, and minimizes interference. According to Mrs. Connolly, the Tech Department is considering installing more APs in classrooms, as opposed to hallways, which would allow for better in-class coverage and possibly block certain websites only in classrooms, while letting them be accessible in community spaces (like the Big Room). This selective control of websites would allow the Tech department to better control traffic flow without completely blocking websites from the school network. What improvements in connectivity speeds can students actually expect from this new technology? Speed tests conducted by Mr. Steinberger on the 802.11n Haverford Guest network resulted in data transfer speeds of between 5-5.5 megabits per second (Mbit/s). “We are going to see somewhere in the range of 100 Mbit/s with the new network,” says Mr. Steinberger. Continued on Page 5
Sam Dyer ‘15 profiles Music teacher and Notables and Glee Club director, Mr. Mark Hightower.
Article Letter fron the Editors Faculty Extracurriculars Costa Rica Trip Italy Trip Artist of the Issue Drinking Age Calculus or Statistics Climate Change Outdex
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