Discovery Education is offering its unitedstreaming video-on-demand service subscribers access to more than 1,000 video clips that have been copyright-cleared by their producers for editing or reproduction by teachers and students in class projects.

Current Discovery subscribers who want access to the editable clips can log onto the unitedstreaming web page and select the box for "editable clips" on the advanced search page.

Here is a look at the available royalty-free videos for history and social studies instruction: