websites_useful

https://catskullelectronics.com/32kcart
https://www.pikuma.com/
https://www.mathplayground.com/
http://www.hemingwayapp.com/
https://www.mathtrainer.org/
https://www.symbolab.com/
https://www.coolmathgames.com/
http://www.cplusplus.com/
https://www.wolframalpha.com/
https://sydneyramen.blog/posts/
http://gbdev.gg8.se/forums/viewforum.php?id=2
http://www.texample.net/tikz/examples/
http://hyperphysics.phy-astr.gsu.edu/hbase/index.html
https://en.cppreference.com/w/
https://trends.google.com/trends/?geo=US
https://www.worldometers.info/world-population/
https://www.godbolt.org/
https://futurism.com/
https://www.nayuki.io/
http://legowelt.org/samples/
http://sevish.com/scaleworkshop
http://mathsfirst.massey.ac.nz/
https://teachablemachine.withgoogle.com/
https://wordassociations.net/en/words-associated-with/Submarine
https://buildmedia.readthedocs.org/media/pdf/midiutil/latest/midiutil.pdf
https://www.ffmpeg.org/ffmpeg-codecs.html
https://www.newshirtoftheday.com/
https://repl.it/languages/python3
http://www.playbackloop.com/