Inventions
- The Origin of Things
- What did Leonardo Da Vinci invent? Who invented yogurt? Learn about the origin of things and who created them. Site in Spanish.
- http://www.educar.org/inventos/
- Inventions
- School children in Spain have created an exhibit of inventions. Visit the exhibit and meet the children who may be the inventors of the future. Site in Spanish.
- http://www.geocities.com/CollegePark/Den/2208/elponton/inventos/index.htm
- Optic Illusions
- Is what I see true? This page invites you to a world of optic illusions where you will have fun and learn to see beyond the evident. Site in Spanish.
- http://www.pilosos.com.co/web/sabios/opticas/index.html
