# data[].attributes.body
https://my.hrw.com/math06_07/nsmedia/tools/Graph_Calculator/graphCalc.html

# data[].attributes.body
https://www.geogebra.org/

# data[].attributes.body
http://info.mheducation.com/Sketchpad.Download.html?aliId=339533779

# data[].attributes.body
https://www.khanacademy.org/math/geometry-home

# data[].attributes.body
http://teachers.henrico.k12.va.us/math/HCPSgeo/G-1ab.html