GONZáLEZ-FELIPE, Mª Esther et al. Design and implementation of a plurimethodological didactic proposal to introduce chemical bonding in 3rd Compulsory Secondary Education grade.. Revista Electrónica de Enseñanza de las Ciencias, [S.l.], v. 18, n. 1, p. 40-55, nov. 2019. ISSN 1579-1513. Available at: <https://revistas.educacioneditora.net/index.php/REEC/article/view/362>. Date accessed: 22 aug. 2026.