This website is partnered with NWEA to allow students to use their MAP scores to practice skills that will help improve their learning at their appropriate level. You do have to purchase this program. Our school bought it last year and the students loved it.
This website allows students from K-12 to practice math and language arts skills. It is free for a while, and then you have to sign up and pay. This could be something your school could purchase and it might be cheaper.
This website is created by PBS Kids and includes lots of interactive whiteboard games for teachers. They incorporate curriculum as well as the characters on PBS kids.
Google Earth lets you fly anywhere on Earth to view satellite imagery, maps, terrain, 3D buildings, from galaxies in outer space to the canyons of the ocean. You can explore rich geographical content, save your toured places, and share with others.