Jackie Robinson: Un héroe en el campo de béisbol: Read-Along eBook

"Brief text introduces the concepts of long and short, comparing some of the world's longest animals with animals that are short -- in both English and Spanish"--Provided by publisher.

Who wants new pants? Not this little boy! He wants to keep his old, worn, torn, too-small pants. His mom does not agree.

Young readers are introduced to the concept of habitats in this colorful book. Each spread describes a different habitat and the animals that live there. Children will learn about habitats in forests, deserts, grasslands, wetlands, on mountains, and in the Arctic and Antarctic. An activity asks readers to use what they have learned to match photos of habitats with their habitat names.

El joven Von Neumann y la ciencia europea de principios del siglo XX. Von Neumann y las matemáticas en Gotinga. Su pensamiento científico. En los Estados Unidos. La actividad científica en los años cuarenta y cincuenta. Von Neumann y la ciencia del siglo XX.