1930 • Born in Salvador (BA), on July 17, Letícia Tarquinio de Souza, daughter of Gonçalo Porto de Souza and Stela Tarquinio de Souza.

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1950 • Begins teaching.

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1955 • Marries in Rio de Janeiro with João José de Sá Parente, who becomes the father of his 5 children.

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1956 • Teacher and director of the Ginásio de Sabinópolis, MG.

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1957 • Her first son, André de Souza Parente, is born.

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1959 • Moves to Fortaleza. Her daughter Angela de Souza Parente is born.

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• Exercises chemistry teaching in secondary education establishments.

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1962 • Daughter Lia is born on April 20.

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1963 • Her daughter Christiana de Souza Parente is born in January and her son Pedro de Souza Parente in November.

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1967 • Publishes the teacher's book: Science curriculum.

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1968 • Publishes the book A Química: Profissão de Química (Editora Vozes).

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1969 • Publishes the monograph Eletronegativity (University Press).

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