One of the Library of Congress' educational resources, use their collection of eight interactive displays about the early Americas to have fun discovering and learning history. Activities include looking through interactive maps, investigating Mayan writings and artifacts, and learning history through paintings.
Teachers can use these tools as part of their lesson plans to gain interest in the subject.
Flashcardmachine.com is a free online tool that allows students, teachers, and professionals to create web-based study flash cards that can be shared with others. You can study your flashcards online or access them on other devices, such as your iPhone, iPod touch, iPad, and Android, available on the App Store and Android market. You can also view flashcards that others have created as well, which makes this online tool very interactive and collaborative.
This is a website full of many cool science videos. It consists of hundreds of educational videos on various topics. An example is a movie on Mars, called Flying on Mars. In addition to science videos, there are English, art, and social studies videos. There are over ten topics, each consisting of multiple interesting videos.