1 Instituto de Estudios de la Ciencia y la Tecnología (ECYT). Universidad de Salamanca. We wish to thank: Ana Cuevas Badallo (Instituto ECYT), Joaquín García Carrasco (Dep. of Education), Maria Cruz Sánchez Gómez (Dep. of Education)), and Maria Jesús Mancho Duque (CILUS: Centro de Investigaciones Linguísticas) de la Universidad de Salamanca for their sugestions and support in the definition and design of this project. Scientific and Technological Culture in ESO Textbooks Miguel Á. Quintanilla Fisac 1 Modesto Escobar Mercado Tamar Groves J. Antonio Montero Becerra Rubén Palacios Sánchez Oscar Montañés Perales Arlyne Orellana McBride