id	domain	url
el-11	3dprintingindustry.com	http://3dprintingindustry.com/3d-printing-basics-free-beginners-guide/history
el-11	search.proquest.com	http://search.proquest.com/docview/214023366?accountid=10920
el-11	www.makerbot.com	http://www.makerbot.com/academy
el-11	morphosource.org	http://morphosource.org/
el-11	cdn.nmc.org	http://cdn.nmc.org/media/2015-nmc-horizon-report-k12-en.pdf
el-11	www.paleoteach.org	www.paleoteach.org
el-11	3d.si.edu	http://3d.si.edu/article/educators
el-11	itunes.apples.com	https://itunes.apples.com/us/book/the-mind-behind-the-mask/id99062104?mt=13
el-11	www.thingiverse.com	https://www.thingiverse.com/curriculum/about
el-11	www.thingiverse.com	http://www.thingiverse.com/thing:250645
el-11	www.ehs.ufl.edu	http://www.ehs.ufl.edu/programs/os/3d-printer-policy