Math maps: Using Google Maps, Maths activities in different places around the world, One location, one maths topic, one map, Activities explained in placemarks in Google Maps, Placemarks geotagged to the maths it refers to. “How wide is this swimming pool?”, Teachers to contribute and share ideas, Maps can be used as independent tasks or group activities in class, Maps can be embedded on websites, blogs or wikis, Tasks to be completed by students and recorded online or offline."
"Free Tools for Teachers. These tools are designed for teacher-facilitated, whole-class instruction in fractions, "Number Talks" and for parents supporting their students at home. Each visual math tool includes a short instructional video, Common Core State Standards alignment, key vocabulary, and IEP goals. Select a topic below to get started." (the rest of the site is subscription-based)
"This is a listing of 64 sites that legally offer free audio books, either for online listening or for download. Given the large amount of sites and offerings, I am not able to give more detailed information on each of the sites."
"This is a listing of 260 sites that legally offer free books (eBooks) for download or for online viewing. Some time ago I went looking for some free eBooks and was surprised to find that there are many resources for this. I decided to put together this list of sites that offer free eBooks as a reference. Since there are so many, I was not able to check each one out thoroughly."
"Stellarium is a free open source planetarium for your computer. It shows a realistic sky in 3D, just like what you see with the naked eye, binoculars or a telescope. It is being used in planetarium projectors. Just set your coordinates and go."