11 de febrero de 1990: La liberación de Nelson Mandela

Identify three-dimensional shapes all around the world in this Spanish-translated e-Book! Figuras en nuestro mundo (Shapes in Our World) gives readers practice identifying familiar shapes like cones, cylinders, pentagons, polygons, and prisms, while familiarizing them with STEM themes and more advanced geometry concepts. Children will learn more about vertices, symmetry, and bases. With each shape, this book gives readers information about an example of the shape, be it a building, a honeycomb, or a tree trunk! With an accessible glossary, clear mathematical diagrams, practical examples, and...

Esta colección está ideada para niños de entre 1 y 3 años. Con ella se quiere iniciar a los niños en la capacidad de asociar imágenes con palabras además de introducir los conceptos básicos de su grafomotricidad -trazo horizontal y vertical-.

Introduces things to eat and drink that are white, from rice to milk. The book ends with a recipe that a child can make with an adult's help.

This book is a comprehensive, practical presentation of the principles of behavior modification and guidelines for their application. It teaches forms of behavior modification ranging from helping children learn necessary life skills to training pets, to solving personal behavior problems.