This document introduces the Carroll Math Summer Seminar 2009. [1] It provides a brief history of Carroll school, which opened in 1967 to teach dyslexic children and moved to its current campus in 1972. [2] It explains that Carroll struggled to find an effective math curriculum for its students and developed its own called Carroll Math, which combines various commercially available math programs and copyrighted materials. [3] The theme of the week-long seminar is to show how Carroll students with language difficulties can solve math problems conceptually through thinking rather than relying on traditional skills.