- http://intraedu.dde.pr/sitepages/curriculum.aspx?subject=matem%C3%A1tica

 

- http://www.de.gobierno.pr/tags/programas-academicos

 

- http://tis.spacefrontier.org/

 

- http://www.nasa.gov/offices/education/about/#.UwbIQ_ldWSo

 

- http://www.nasa.gov/audience/foreducators/index.html#.U24eo5a0lP5

- http://www.esa.int/Education

 

- http://www.cienciapr.org/

 

- http://www.aexa.tv/

 

- http://teacher.scholastic.com/space/mission.htm

 

- http://aas.org/education/EducatorResources

 

- http://space.about.com/od/educationastronomyspace/tp/Space_Education_Resources.htm

 

- http://teachspacescience.org/cgi-bin/ssrtop.plex

 

- http://meteorites.pdx.edu/ID-intro.htm

 

- http://www.observeasteroids.org/