Edmodo: Teachers and students can take advantage of this great tech tool, as it offers a Facebook-like environment where classes can connect online.
Pinterest: You can pin just about any image you find interesting on this site, but many teachers are using it as a place to collect great lesson plans, projects, and inspirational materials.
WebQuest is a student-oriented research during classes, in which the starting source of information is the Internet.
more in Polish: http://www.enauczanie.com/metodyka/webquest/o-metodzie-webquest
Games for kids
The web site has many resources for kids to learn about the world and play simple games.
For science teachers
The web site provides science teachers with free teaching resources and ideas to support effective pedagogy to challenge students (GCSE/KS3) to think deeply about concepts in Biology, Chemistry and Physics.
For math teachers
Graph functions, plot tables of data, evaluate equations, explore transformations, and much more – for free!