Many relevant materials can be found in the L and Q Call Number ranges, which comprise Education and Science respectively. The attached pdf includes a breakdown of the QA sub--class that includes materials on Algebra, Geometry, Statistics, and Analytical Mathematics.
HERE is a link to a list of the LIbrary of Congress subject headings in the library's collection.
You can view a detailed breakdown of the QA Sub-Class in the pdf below:
New TED Talks on Education and related subjects are being made all the time. Learn more at http://www.ted.com.
TED: Ideas worth spreading
Today's math curriculum is teaching students to expect — and excel at — paint-by-numbers classwork, robbing kids of a skill more important than solving problems: formulating them. Dan Meyer shows classroom-tested math exercises that prompt students to stop and think.