Improve the grammaticality of this text: Then, he was a professor of plastic arts in the division of the scientific sports and cultural activities (DASCS), at the University of Constantine 3. since 2018, He exercises the plastic art within his workshop in Denain, France. works were exposed in Padua in Italy, in Vilnius in Lithuania 2016, in Barcelona, in France, in Antwerpen in Belgium, in Rotterdam in Netherlands in 2017.
Then, he was a professor of plastic arts in the division of the scientific sports and cultural activities (DASCS), at the University of Constantine 3. since 2018, He exercises the plastic art within his workshop in Denain, France. works were exposed in Padua in Italy, in Vilnius in Lithuania 2016, in Barcelona, in France, in Antwerp in Belgium, in Rotterdam in Netherlands in 2017.