Gadamer has laid a foundation of the philosophy of hearing and meanwhile,in the course of interpretation he faced the difficulty of the absence of "being" And Derrida s deconstructionism and Cheng Chung-ying s onto-hermeneutics offer a remedy with possibility to build the free and open philosophy of observation based on writtencentricism.

many ways will be used to improve effect of the mathematics listening,such as enhancing their understanding of mathematics learning,showing adv.