These buttons provide access to pdf versions of the Holt Social Studies textbooks. These may be downloaded and printed for classroom use or can be used with various devices, including reading on iPads. Also, they can be interactive using the accessibility options on iPads, including highlighting, notes, etc. (see the "Accessibility Settings on Devices" page of this website for more information). Also, they can be used with many of the apps on the iPad (see "Technology to Support Reading Accessibility" on the Reading Accessibility page of this website.)