References
- De Villiers M. Rethinking proof with geometer's sketchpad. Berkeley (CA): Key Curriculum Press; 2003.
- De Villiers M. Generalizations involving maltitudes. Int J Math Educ Sci Technol. 1999;30:541–548.
- Hanna G, Jahnke N. In: Bishop AJ, Clements MA, Keitel C, Kilpatrick J, Laborde C, editors. Proof and proving, international handbook of mathematics education. Dordrecht: Kluwer; 1996. p. 877–908.
- National Council for Teachers of Mathematics. Principles and standards for school mathematics. Reston (VA): NCTM; 2000.
- Council of Chief State School Initiatives. Common core state standards for mathematics. Washington (DC): CCSSI; 2010.
- Burger WF, Shaughnessy JM. Characterizing the van Hiele levels of development in geometry. J Res Math Educ. 1986;17:31–48.
- Hoyles C. The curricular shaping of students’ approaches to proof. For Learn Math. 1997;17:7–16.
- Knuth EJ. Secondary school mathematics teachers’ conceptions of proof. J Res Math Educ. 2002;33:379–405.
- Moore RC. Making the transition to formal proof. Educ Stud Math. 1994;27(3):249–266.
- Cirillo M, Herbst PG. Moving toward more authentic proof practices in geometry. Math Educator. 2011/2012;21(2):11–33.
- Haga K. Origamics: mathematical explorations through paper folding. Hackensack (NJ): World Scientific; 2008.