Los fósiles y las rocas

The need for speed is the motivating factor in this engaging, Spanish book. Readers learn the history of travel from the very slow to the supersonic and beyond, including everything in between. They learn and discover the factors that influence motion for all types of vehicles: land, air, and water alike. They also learn different ways to measure speed and read about energy uses for different vehicles. With greater speed comes greater risk. Readers learn how engineers are always seeking new and better ways to keep people safe as they travel faster and go farther. This 6-Pack includes six...

Our closest solar system is about 10 light years away. It has two main types of planets. Some are rocky and small, like planet Earth, while others are huge balls of gas, like Jupiter. Learn about how astronomers once thought our solar system was the one and only, to how they have now discovered hundreds of stars with planets orbiting them, which means there could be billions of solar systems in outer space! Just maybe, these alien worlds could host life, like our own amazing planet. This book allows students to use observations of the Sun, moon, and stars to describe patterns that can be...

Presents winter games for children through age 8, which can be played at home with family or with friends using simple materials.

La aventura más épica del grupo de Los Compas, ¡con Mayo e Invictor como protagonistas! Algo terrible ha sucedido en el pueblo de Invictor y Mayo: la mitad de la esmeralda sagrada fue robada del laboratorio Force Atomic Company por el profesor Malus Malunfus, un malvado científico. La humanidad corre un gran peligro: si las dos mitades se unen, convertirán a Malunfus en el hombre más fuerte sobre la tierra y esto supondría el fi n del planeta. Por suerte, nuestros compas no lo van a permitir. Invictor el mamadísimo y Mayo, la tostadora deberán evitar que el ladrón cumpla con su...