Beside her family life and research work, regular publishing and lecturing also formed an integral part of Marie's life.
In 1900 she was named a physics teacher to the faculty of the Normal School (École Normale Superieure) for Girls at Sèvres, where she was the first to introduce a teaching method based on educational experiments.
In 1906 she was asked to take over her late husband's post, and so, she was the first female professor at the Sorbonne.
In 1910 she published her fundamental treatise on radioactivity, under the influence of which a remarkable number of scientists started to study radioactive substances all over the world.
During the course of her life, Marie gave lectures in several European countries, and she also paid visits to the United States and Brazil.
Although she could have, she never accumulated great wealth either to herself or her children. When the Curies were offered huge amounts of money for the procedure of radium isolation, the two scientists shared their research findings and radium stock with the scientific world gratis.