Undeniably omnipresent in our everyday lives, electronic signal compression is a classical example that illustrates the ubiquity of mathematics in high-end technology and sciences. When dealing with piles of files, it is essential that each file takes up as little storage space as possible while maintaining quality. The cloud-based--available…

Reviews a number of interesting sites on the Internet for mathematics education and considers the different ways in which the information available can be used as a teaching resource. Provides practical guidance on how teachers might take information in text, graphic, and file formats and use it either for themselves or with pupils. (Author/ASK)