Cómo funcionan los ecosistemas

Today’s computers come in all shapes and sizes, but not many people actually know how they’re made. The journey from circuits and wires to a ready-to-use computer is a fascinating exploration of science and engineering. Readers get a look inside their laptops, desktops, and even their tablets as they’re shown step-by-step how these electronic marvels are assembled. Readers will love knowing what goes on inside their own machines, and color photographs and simple instructions will show them how they can build their own computer!

There are many kinds of grass, but when most people think of this green plant, they think of the kind found in backyards and parks. Grass is like many other plants with its roots, leaves, and needs of soil, water, and sun. Young readers find out that acres of grass come from the tiniest of seeds. With this knowledge, they'll never look at someone mowing the lawn in the same way again. Full-color photographs closely correlate with the accessible narrative, which is written especially for emerging readers.

It s fun to find ways I m like you and you re like me. It s fun to find ways we re different. In this colorful, inviting English-Spanish book, kids from preschool to lower elementary learn about diversity in terms they can understand: hair that s straight or curly, families with many people or few, bodies that are big or small. With its wide-ranging examples and fun, highly detailed art, "I m Like You, You re Like Me/ Yo soy como tu, tu eres como yo" helps kids appreciate the ways they are alike and affirm their individual differences. A section for adults in the back provides tips and...

1. LAS PRUEBAS DE LA CONDICIÓN FISICA 2. Utilidad de las pruebas de condición física 3. Pruebas de flexibilidad 4. Pruebas de resistencia aeróbica 5. Pruebas de fuerza 6. Pruebas de velocidad 2. MÉTODOS DE ENTRENAMIENTO Y PLANIFICACIÓN PARA EL DESARROLLO DE LA CONDICIÓN FÍSICA Métodos de entrenamiento para la resistencia aeróbica Métodos de entrenamiento para la flexibilidad Métodos de entrenamiento para la fuerza Factores de entrenamiento Distribución del trabajo de condición física a lo largo de la semana 3. EL MASAJE EN EDUCACIÓN FÍSICA Breve reseña histórica Efectos del ...