This interactive resource made available through the Library of Congress teaches students an introduction to the history of copyright law. Explore a timeline with linked primary documents about copyright law and the evolution of intellectual property, learn how to register for copyright, and more. Great tool for providing a foundation to talk about copyright infringement and plagiarism in the classroom.
http://loc.gov/teachers/copyrightmystery/

Whooo's Reading motivates students to read and answer critical thinking questions by rewarding them with coins and badges to customize their "owlvatars." Not a free tool, but has many features and benefits worth exploring!
https://www.whooosreading.org/

Storify.com is a website that allows users to curate resources from social media and the web to enhance their stories! Add pictures, links, GIFs, videos, and more using an easy drag-and-drop interface.

Cel.ly is a tool that can be accessed through any device as a means for students, teachers, and parents to collaborate through the creation of private (or public) communities called "cells."

https://cel.ly/?