[[Include(WikiToC)]] = STEM Labs for K--12 Education = This wiki page contains tutorials for the open-access remotely-accessible STEM lesson plans and labs for K--12 Education using the COSMOS testbed. The lesson plans are aligned to next generation science standards (NGSS). Authors: * Panagiotis Skrimponis, New York University: ps3857[at]nyu.edu * Nikos Makris, New York University Last updated: October 12, 2020 == COSMOS Education Toolkit == === Summary === The rapid evolution of technology requires major transformation in the educational system. ''All students'' should have quality access to science, technology, engineering, and mathematics (STEM) pre-college coursework in order to bridge the digital and equity divide. To address this challenge, we developed a teacher professional development (PD) program and a toolkit consisting of a hardware and software system to engage STEM teachers in learning about wireless technology through various hands-on activities and collaborative research. Through the PD program and the development of the [https://cosmos-lab.org/cosmos-toolkit/ COSMOS Education Toolkit], the COSMOS research testbed is transformed into an innovative learning platform for K--12 urban students that would provide significant educational benefits for the local community. The hardware setup of the 'COSMOS Education Toolkit' is inspired by the testbed's nodes. It consists of various off-the-shelf components, which, in combination with dedicated software, allows the teachers to execute a vast number of real-world experiments. The software system has been designed around a web-based graphical interface enhanced with an easy to use philosophy on the execution and management of the lab activities. The students access the graphical interface to navigate and select a lesson, execute the lab activity, and collect the measurements with a similar philosophy as the COSMOS testbed. === Publications === For more information about the 'COSMOS Education Toolkit' and the teacher's professional development program, please read: 1. Panagiotis Skrimponis, Nikos Makris, Sheila Borges Rajguru, Karen Cheng, Jonatan Ostromertzky, Emily Ford, Zoran Kostic, Gil Zussman, and Thanasis Korakis, “COSMOS Educational Toolkit: Using Experimental Wireless Networking to Enhance !Middle/High School STEM Education,” in ACM SIGCOMM Computer and Communication Review, vol. 50, no. 4, Oct. 2020 [https://wimnet.ee.columbia.edu/wp-content/uploads/2020/10/sigcomm-CCR-cosmos-toolkit-2020.pdf Download] 2. Panagiotis Skrimponis, Nikos Makris, Karen Cheng, Jonatan Ostromertzky, Zoran Kostic, Gil Zussman, Thanasis Korakis, and Sheila Borges Rajguru, “A Teacher Professional Development Program Using Wireless Communications and NGSS to Enhance STEM Teaching and Learning,” in Proc. 2020 ASEE Virtual Annual Conference Content Access, Jul. 2020' [https://peer.asee.org/34073 ASEE] [https://wimnet.ee.columbia.edu/wp-content/uploads/2020/05/COSMOS_Education_ASEE2020.pdf Download] [https://wimnet.ee.columbia.edu/wp-content/uploads/2020/07/ASEE_2020_COSMOS_PD.pdf Presentation] [https://youtu.be/gh4n9S_Kuqc Video] 3. D. Raychaudhuri, I. Seskar, G. Zussman, T. Korakis, D. Kilper, T. Chen, J. Kolodziejski, M. Sherman, Z. Kostic, X. Gu, H. Krishnaswamy, S. Maheshwari, P. Skrimponis, and C. Gutterman, “Challenge: COSMOS: A city-scale programmable testbed for experimentation with advanced wireless,” in Proc. ACM MOBICOM’20, 2020." ​[https://dl.acm.org/doi/10.1145/3372224.3380891 ACM] [https://wimnet.ee.columbia.edu/wp-content/uploads/2020/02/MobiCom2020_COSMOS.pdf Download] [https://wimnet.ee.columbia.edu/wp-content/uploads/2020/09/mobicom2020_cosmos_slides.pdf Presentation] [https://youtu.be/t2XxgExefns Long Video] [https://youtu.be/BIMubLpxyAc Short Video] Please email Panagiotis if you have any questions or you are interested in using the 'COSMOS Education Toolkit' in your class. In case you use these experiments in your class please cite the above papers. == COSMOS SandBox1 == The SDR experiments of the 'COSMOS Education Toolkit' have been evaluated in [https://wiki.cosmos-lab.org/wiki/Architecture/Domains/cosmos_sb1 sandbox 1] using the outdoor sub-6 GHz deployment. In this tutorial we will use a large `s1.lg1` and a medium node `md1` of the 'Main Rooftop SDR Deployment'. Both of the nodes are equiped with a USRP Krypton 2974 via PCI-e. [[Image(sb1-rooftop.png, 800px)]] === Node Setup === Follow the steps below to gain access to the [wiki:Architecture/Domains/cosmos_sb1 sandbox 1 console] and set up nodes with appropriate image. 1. If you don't have one already, sign up for a [https://www.cosmos-lab.org/portal-2/ COSMOS account] 1. [wiki:/GettingStarted#MakeaReservation Create a resource reservation] on sandbox 1 1. [wiki:/GettingStarted#LogintoyourReservation Login] into sandbox 1 console `console.sb1.cosmos-lab.org` using SSH. 1. Power off all the nodes and devices of sb1. {{{#!shell omf tell -a offh -t system:topo:allres }}} 1. Load the {{{education-toolkit.ndz}}} on `sdr2-s1-lg1` and `sdr2-md1`. {{{#!shell omf load -i education-toolkit.ndz -t sdr2-s1-lg1,sdr2-md1 }}} 1. Power on `sdr2-s1-lg1` and `sdr2-md1`. {{{#!shell omf tell -a on -t sdr2-s1-lg1,sdr2-md1 }}} 1. Check the status of the nodes and devices of sb1. Verify that `sdr2-s1-lg1` and `sdr2-md1` are on. {{{#!shell omf stat -t system:topo:allres }}} === Experiment Setup === To run the experiments we developed a user-friendly web interface based on HTML and CSS, and back-end web-server developed in python that will control and orchestrate the experiments. The communication between the host machine and the remote testbed nodes should be in a similar way as the 'COSMOS Education Toolkit'. To enable this we to use port and X11 forwarding from the remote nodes to the local host. The following tables provide a detailed mapping of the ports for both nodes. {{{#!th colspan=3 rowspan=1 sdr2-s1-lg1 }}} |---------------- ||= Description =||= Remote Port =||= Local Port =|| || Front-end web interface || 80 || 8081 || || Back-end web server || 8090 || 8091 || || Audio TCP server || 8100 || 8101 || [[BR]] {{{#!th colspan=3 rowspan=1 sdr2-md1 }}} |---------------- ||= Description =||= Remote Port =||= Local Port =|| || Front-end web interface || 80 || 8082 || || Back-end web server || 8090 || 8092 || || Audio TCP server || 8100 || 8102 || `Port:80` is used for visualizing the web interface and start all the lessons and labs. `Port:8090` is used to communicate with the back-end server. Both of these ports are essential for all the lessons and labs. Some labs require the use of a speaker so you can listen to the incoming audio signal from the SDRs. For this reason we create a TCP socket at `Port:8100` of the remote node that will stream the audio to the host. For the host we create a simple python file that can be used to connect to the TCP server and listen to the music. All the GNU Radio experiments require the use of a GUI. For this reason, when you are connecting to sb1 and the node you should use either the -X or -Y option. This will forward the X11 Server from the remote node to the local host. 1. Open a new terminal and enable port and X11 forwarding from `sdr2-s1-lg1` {{{#!shell-session not_a_user@laptop:~$ ssh -Y your_username@console.sb1.cosmos-lab.org -L 8081:sdr2-s1-lg1:80 -L 8091:sdr2-s1-lg1:8090 -L 8101:sdr2-s1-lg1:8100 your_username@console:~$ ssh -Y root@sdr2-s1-lg1 }}} 1. Open a new terminal and enable port and X11 forwarding from `sdr2-md1` {{{#!shell-session not_a_user@laptop:~$ ssh -Y your_username@console.sb1.cosmos-lab.org -L 8082:sdr2-md1:80 -L 8092:sdr2-md1:8090 -L 8102:sdr2-md1:8100 your_username@console:~$ ssh -Y root@sdr2-md1 }}} Both of the terminal sessions need to remain open when you are executing the experiments. After setting up the nodes, you can now start exploring the COSMOS K--12 STEM educational labs. To connect to the web interface of `sdr2-s1-lg1` press [http://localhost:8081], and to connect to the web interface of `sdr2-md1` press [http://localhost:8082]. === Experiments === In the following webpages you can find detailed description for each STEM Lab. * [wiki:./8-am-fm-modulation Science - Grade 8 - AM/FM Modulation] * [wiki:./8-signal-transmission Science - Grade 8 - Signal Transmission]