El caracol de la tortuga

This book introduces you to giraffes, including their size, diet and everyday behavior, which highlights differences between those in the wild and those living in a zoo habitat.

For those who enjoy unconventional solutions, the author offers a wide range of all-time paradoxes that defy your deductive and calculation skills with impossible logical truths, and helps you to learn how to overcome the traps of false truths.

Where is your brain exactly? What does it do? Use your brain to read this engaging, Spanish-translated title and learn all about it!

Basic concepts about electricity for highschool level and college. Topics include: Electrical circuits, Ohm's law, serial and parallel circuits, electric power, CD circuits, etc. With questionnaire.