We apply coding for studying maths. Thanks to the free visual programming language SCRATCH and the dynamic mathematics software GEOGEBRA we create and share simple projects for explaining maths topics included in the middle school curriculum (pupils aged 12-14). This approach will engage young students in a creative experience in programming their own animations and simulations related to maths. A strong collaborative feature will be planned in order to motivate pupils in a peer-to-peer fruitful transnational exchange. Moreover, the project will help students to face difficulties in mathematics thanks to an approach based on systematic reasoning and collaborative working.