; (C) a description of the types of digital course materials used in the pilot programs, including electronic books, interactive and adaptive digital learning tools, and open educational resources; and (D) any recommendations the Secretary determines appropriate regarding future congressional action related to student access to digital course materials. (f) Definitions In this section: (1) Cost of attendance The term cost of attendance has the meaning given the term in section 472. (2) Institution of higher education The term institution of higher education has the meaning given the term in section 101(a), except that such term only includes public institutions. (3) Digital course materials The term digital course materials includes electronic books, portable document format and word-processing documents, internet websites, interactive and adaptive digital learning tools, open educational resources, and other digital and online educational resources. (4) Open educational resources The term open educational resources means digital course materials that are made freely available online to the public with a permanent copyright license granting advance permission for the public to access, distribute, adapt, and otherwise use the work with appropriate attribution to the authors as set forth in the materials. (5) Mobile computer device The term mobile computer device means an electronic reader or tablet computer. (6) Disadvantaged student The term disadvantaged student means an undergraduate student who is— (A) from a low-income family; (B) a minority; or (C) from an economically or otherwise dis­ad­van­taged background. (g) Sunset No grants may be awarded under this section after September 30, 2020. .