1. Ainsworth S., (1999), The functions of multiple representations, Comput. Educ., 33, 131–152
2. Ainsworth S., (2006), DeFT: a conceptual framework for considering learning with multiple representations, Learn. Instr., 16, 183–198
3. Ainsworth S. and VanLabeke N., (2004), Multiple forms of dynamic representation, Learn. Instr., 14, 241–255
4. Akkuş H., Kadayifçi H., Atasoy B. and Geban Ö., (2003), Effectiveness of instruction based on the constructivist approach on understanding chemical equilibrium concepts, Res. Sci. Technol. Educ., 21, 210–227
5. American Chemical Society Committee on Professional Training, (2008), Undergraduate professional education in chemistry: ACS guidelines and evaluation procedures for bachelor's degree programs, Washington, DC: American Chemical Society