Google Expeditions and Google Cultural Institute creates exciting opportunities for students to visit places beyond the walls of the classroom.
Google Tourbuilder is a great way to use Google Earth to explain context and virtually tour different places. I used Google Tourbuilder to prepare students for leaving home.
To find out more about Google Tours view this site https://www.google.com/earth/outreach/tutorials/tourbuilder.html or watch this tutorial: http://www.slideshare.net/MarlenaHebern/google-tour-builder
Simulating Scientific reactions is one way for students to improve their knowledge of science. Phet Simulations is a great tool to use: https://phet.colorado.edu/en/simulations/category/new