The application of computational tools of IT in mathematical tasks / Dana Országhová. -- grafy, ilustr., tab. -- Bibliografické odkazy. In: Effective Development of Teachers’ Skills in the Area of ICT. -- 1. ed.. -- 498 s.. -- 978-83-60071-96-0 (brož.) Effective Development of Teachers’ Skills in the Area of ICT. -- Katowice : University of Silesia, 2017. -- S. 438-448. informačné a komunikačné technológie * e-learning * matematické výpočty * učitelia