8Proving and Doing Proofs in High School Geometry Classes:What Is It That Is Going On for Students? By:Herbst,Patricio; Brach,Catherine.Cognition & Instruction,2006,Vol.24 Issue 1.
9Bell A. A Study of Pupils' Proof-explanations in Mathematical Situations [J], Educational Studies in Mathematics, 1976, (7): 23-40.
10Hanna G,Jahnke H N. Proof and Proving [A]. In: Bishop K, Clements C, Keitel J, et al. International Handbook of Mathematics Education [C]. Dordrecht: Kluwer Academic Publishers, 1996.
