After he returned to Italy he taught at Bologna from 1346 to ca. 1352. About 1346 he wrote a treatise On the Velocity of the Motion of Alteration, which was subsequently printed in Venice in 1505. In it he presented a graphical analysis of the motion of accelerated bodies. His teachings in mathematical physics influenced scholars at the University of Padua and, it is believed, may have ultimately influenced the similar ideas presented over two centuries later by Galileo Galilei.