Drawing, Video and Photo-Editing Tools
Seesaw - This e-portfolio tool has a built-in recordable whiteboard - select the Drawing option . Seesaw also has options for video, inserting images, files, links and notes. Easy to use. Free with paid upgrade options
CC Image Sites
Create and Insert a Drawing direct from a Document
Video Creating & Editing
You tube editor has some basic editing tools.
WeVideo is an app in GAFE. The free personal account allows for 5 minutes of video and 2GB cloud storage. Paid Education accounts are available that allow for collaboration, longer videos and more storage. More info here.
FreeTech4Teachers list of 6 Video-editing tools for Chomebooks
12 Free Ways to Create Videos on Chromebooks
Stop Motion Animation
5 animation sites
Remove.bg - can easily remove any background from images containing people.You can then layer the pic of the person over another image.
Pixlr Editor enables you to do basic green-screening (also known as chroma-keying) of images (not video). It is a free Chrome Web Store app or website. It does have ads on the side. It is quite easy to use. The video below explains how:
Another alternative without the ads and that allows you to use video in your green-screening is We-Video but this requires the the paid upgrade - this is approx $90 pa for a 1 seat licence or $300 for a 30 seat education licence. More on education pricing here. Prices in $US.
Examples and tips for green-screening can be found here.