Find coding courses and computer science lessons to use with your students. All of the materials in the computer science curriculum are free and easy to use.
C. Ziviani, G. Campos, G. Roque, and B. Pereira Nunes. Décima Conferencia Iberoamericana en Sistemas, Cibernética e Informática, 2, page 52-57. Orlando, US, IIIS, (July 2011)