Maria Edgeworth was a nineteenth century novelist, primarily remembered for her adult and children's novels. Yet her book, "Letters for literary ladies" discussed the importance of science education for girls and in conjunction with her father, Richard Edgeworth, she wrote several treatises on education. Their book "Practical education" advocates an inquiry approach to teaching science and also using scientific practices, such as observation and data collection, to examine and plan children's education. They emphasised the importance and the role of experimentation, observation and critical thinking in the development of children's knowledge, skills and attitudes towards learning. However, the history of science education has to date ignored this seminal work and Maria's contributions to women's science education.