[justify]H. Bahadır Yanik (2014). [url=https://app.box.com/s/ooiyz6pmevhgios0xgydmnef049t0t5w]Middle-school students’ concept images of geometric translations[/url]. [i]The Journal of Mathematical Behavior, Volume 36[/i], December 2014, Pages 33-50, ISSN 0732-3123, doi: [url=http://10.0.3.248/j.jmathb.2014.08.001]10.1016/j.jmathb.2014.08.001[/url][/justify]

[justify][/justify][justify]Kospentaris, G., Spyrou, P. & Lappas, D. (2011). [url=https://app.box.com/s/93tqbl2lfsfs0tx5pngmdyzeahyt875c]Exploring students’ strategies in area conservation geometrical tasks[/url]. [i]Educational Studies in Mathematics 77[/i](1), pp. 105-127. doi: [url=http://doi.org/10.1007/s10649-011-9303-8]10.1007/s10649-011-9303-8[/url][br][/justify]

[justify][/justify][justify][/justify][justify]LeAnn E. Neel-Romine, Sara Paul and Kathryn G. Shafer (2012). [url=https://app.box.com/s/q98y2mnrsezuubcknltc6md4iwojqfxi]Get to Know a Circle[/url]. [i]Mathematics Teaching in the Middle School 18[/i](4), pp. 222-227. doi: [url=http://doi.org/10.5951/mathteacmiddscho.18.4.0222]10.5951/mathteacmiddscho.18.4.0222[/url][/justify]

[justify]Apellido, N. (Año creación). [i]Nombre recurso[/i] [Tipo recurso]. En dirección web[br][br]Ejemplo:[br]Rubio-Pizzorno, S. (2016). [i]Recta de Euler[/i] [Hoja de Trabajo Dinámica de GeoGebra]. En geogebra.org/m/SMFR83H3[/justify]