Teachers often need to work offline. It is useful to have web files on the teacher's or the students' computer to work with them, especially in cases where the Internet connection is not good, is not stable or is not fast enough.
This course is a short tutorial on an example of a webspider, a useful complement for science teachers. It is a powerful offline browsing, site mirroring, and file-retrieving tool for Internet files.
A Q&A (questions and answers) forum completes the course. The course contents will be updated with further applications and contributions from teachers, specially those coming from the Q&A section.