Free eBook builder from CAST. Provides lots of supports for the designing of books and provides UDL supports for students who read the books. Great tool to use with a classroom to build a book together, for students to use to publish their work, and for teachers to write interactive books for their lessons.
Description taken directly from site"…provide teachers and students access to virtual manipulatives that directly support our district's math and technology curricula. In 2002, the BPS Office of Instructional Technology and Secondary Math Department began working with the Education Development Center, Inc. (EDC) to align technology to our math curriculum and to provide professional development to our teachers and district staff."
Free-Reading is an open source instructional program that helps
educators teach early literacy. Because it is open source, it
represents the collective wisdom of a wide community of teachers and
researchers. Free-Reading contains a 40-week scope and sequence of
primarily phonological awareness and phonics activities that can
support and supplement a typical kindergarten or first grade "core" or
"basal" program. Check the FAQs for their advisory board, who is sponsoring and research base.
I cannot find who produces this site but I found the following citation on most of the subject area pages "Updated. Ready for 07-08 school year." I would consider the links found on each page to be supportive of student classroom activities, or do at home resources. Very comprehensive.