It is a site that has a section that promotes digital citizenship through a few games geared towards various age levels.

https://www.commonsense.org/education/student-interactives

It is a multi-purpose website in which you can add students, keep grades, upload and share materials, give quizzes and/or tests and other assignments, and provide feedback.

https://www.schoology.com/

JSTOR is a database for a collection scholarly books, articles, and other materials that frequently used in universities.

https://www-jstor-org.libdb.fairfield.edu:8443/

A website with information and materials on how to teach/apply critical thinking at various levels.

http://www.criticalthinking.org/pages/high-school-teachers/807

An Apple app. Note-taking application through which you can type notes and use a handwriting feature that allows you actually write with your finger or a stylus. It also allows you to write or fill out PDFs.

https://itunes.apple.com/us/app/notability/id360593530?mt=8

https://www.twiddla.com/

It is, as they call it, a digital whiteboard. You can physically draw and type on it, and the members of the group watch in real-time.

I imagine that this could be very helpful for group art/creative design projects, or even just a way to bounce ideas off of each other.