Las ballenas

Libro infantil que presenta de una forma jocosa y divertida las dificultades que trae la lluvia para el desenvolvimiento de la vida cotidiana para los seres humanos, pero también destaca las ventajas para los demás seres vivos y la naturaleza.

This Spanish-language series presents the complete range of math concepts and skills students are expected to master during the first grade. The series moves sequentially, from easiest to hardest concepts, with each book covering a different math topic. The first volume reviews the math concepts students learned in kindergarten. The next six books cover counting, adding and subtracting, tables and graphs, money, patterns, and measuring. The eighth volume is a summary of the math concepts students have studied throughout the year. Each book presents situations that show the relevance of math...

Examines the nature of inclined planes and wedges, how they can reduce the amount of force necessary to perform work, and ways in which they are used.

Con páginas desplegables y atractivos modelos realistas de las especies de dinosaurios más populares, este libro es una maravillosa introducción al mundo de estas fascinantes criaturas. With foldout pages and beautiful, realistic models of the most popular dinosaur species, this book is an incredible introduction to the world of these fascinating creatures.