The website "Earthlearningidea" was developed for the International Year of Planet Earth in 2007 and continues with one new activity per fortnight. Activities are devised to catch the attention of students and to enable them to enjoy the science of the Earth. Many activities require minimal equipment, for schools in developing countries, but there…

The authors relate that they have conducted short courses on using constructivist techniques to teach historical geology over the past four years at regional National Science Teachers Association (NSTA) meetings. They realized that although most course participants were familiar with the basic tenets of plate tectonics, the authors were always…