Easy equation plotter, plus plenty of options for lines, angles, circles, etc.
See on www.geogebra.org
WeVideo is the leading online video creation platform, providing video editing, collaboration, and sharing across any device – mobile, tablets, laptops & PCs.
Excellent web based video editing site/app. Works great in Chrome, and on Chromebooks. Integrates well with Google Education accounts.
See on www.wevideo.com