[2] Blanton, M., Brizuela, B. M., Gardiner, A. M., Sawrey, K., Newman-Owens, A.:
A learning trajectory in 6-year-olds' thinking about generalizing functional relationships. (2015). Journal for Research in Mathematics Education, 46(5), 511-558.
https://doi.org/10.5951/jresematheduc.46.5.0511 DOI 10.5951/jresematheduc.46.5.0511
[4] Goldin, G.: A scientific perspective on structures, task-based interviews in mathematics education research. (2000). In R. A. Lesh & A. E. Kelly (Eds.), Research design in mathematics and science education (pp. 517-545). Erlbaum, Hillsdale.
[5] Hecht, T., Černek, P.: Matematika pre 2. ročník gymnázií a SOŠ - Funkcie. (2002). (1. vyd.). Orbis Pictus Istropolitana Bratislava.
[6] Hecht, T.: Matematika pre 3. ročník gymnázií a SOŠ - Funkcie II. (2006). (1. vyd.). Orbis Pictus Istropolitana Bratislava.
[7] Janvier, C.: Teaching the concept of function. (1983). Mathematical Education for Teaching, 4(2), 48-60.
[8] Kerslake, D.: Graphs. In K. M. Hart. (1981). (Ed.), Children's understanding of mathematics concepts: 11–16 (pp. 120-136). John Murray.
[9] Kubáček, Z.: Matematika pre prvý ročník gymnázií, 2. časť. (2010a). Slovenské pedagogické nakladateľstvo - Mladé letá.
[10] Kubáček, Z.: Matematika pre 2. ročník gymnázií a 6. ročník gymnázií s osemročným štúdiom, 2. časť. (2010b). Slovenské pedagogické nakladateľstvo - Mladé letá.
[11] Leinhardt, G., Zaslavsky, O., Stein, M. K.:
Functions, graphs, and graphing: Tasks, learning, and teaching. (1990). Review of Educational Research, 60(1), 1-64.
DOI 10.3102/00346543060001001
[13] Odvárko, O.: Matematika pre 2. ročník gymnázií. (1985). Slovenské pedagogické nakladateľstvo.
[15] Pittalis, M., Pitta-Pantazi, D., Christou, C.:
Young students’ functional thinking modes: The relation between recursive patterning, covariational thinking, and correspondence relations. (2020). Journal for Research in Mathematics Education, 51(5), 631-674.
DOI 10.5951/jresematheduc-2020-0164
[18] Slabý, M., Semanišinová, I., Climent, N.:
The specialized knowledge of middle school teachers concerning the concept of function. (2022). Annales Universitatis Paedagogicae Cracoviensis Studia Ad Didacticam Mathematicae Pertinentia, 14, 81-101.
DOI 10.24917/20809751.14.5
[19] Stein, M. K., Leinhardt, G.: Interpreting graphs: An analysis of early performance and reasoning. (1989). Unpublished manuscript, University of Pittsburgh, Learning Research and Development Center, PA.
[20] Vollrath, H. J.:
Search strategies as indicators of functional thinking. (1986). Educational Studies in Mathematics, 17(4), 387-400.
DOI 10.1007/BF00311326