https://sites.google.com/a/xtec.cat/el-raco-de-les-matematiques/
http://www.fisme.science.uu.nl/toepassingen/28432/
Per començar a programar. Run Marco
https://www.brainpop.com/games/runmarco/
Per treballar les fraccions
https://www.nctm.org/Classroom-Resources/Illuminations/Interactives/Equivalent-Fractions/