The paragraph is followed by an incomplete phrase or sentence which summarizes the main idea of the paragraph. Choose the missing words of the phrase or sentence.

We have worked, for example, with the Library of Congress to develop the American Memory Fellows program. This program brings teams of teachers together in both virtual and face-to-face learning communities to develop, test, and publish creative classroom applications that make use of the Library's digitized collections in American History. Teachers learn how to work with primary-source archives that include photographs, pamphlets, films, and audio recordings from American history and culture. Technology makes access to these materials possible and enables teachers to work together to build lesson plans and curriculum for their classrooms. 

（）of technology in teaching.