"Activities and worksheets designed to provide additional skill review, informal pencil-and-paper assessment, preparation for standardized testing, and differentiated instruction. Includes student pages, answer keys, and a complete listing of the student pages grouped by skill. Available as a free pdf download in English and Spanish"
"Teachers can take their students on field trips across the country and around the world. They can explore the Library of Congress or Lincoln Memorial through interactive tours. A baby panda, mysterious octopus and curious orangutan are just a mouse click away by way of zoo and aquarium web cams like the AnimalCams at the National Zoological Park. Tech Robotics, the Paleontology Portal and Amusement Park Physics are just a few of the virtual science adventures that can spark the imagination of young minds. Virtual field trips open up the world and the universe to students and their teachers. Whether it's a teacher-guided group field trip or individual student projects, the wide array of virtual tours freely available online can add an exciting dimension to the classroom"
A huge factor for schools in dealing with students and working online is CIPA/COPPA compliance. This is to ensure student safety as well as monitor and filter their online behavior.