Simplemente Ciencia. Clima

Learn all about the leaders in local government. Find out the duties of a city council, its role in making city laws, and groups a city council works with to help run the city.

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.

Introduces the concepts of short and tall, comparing some of the world's shortest and tallest animals.

¡Todos los cuerpos son hermosos, y todos crecen a su propio ritmo! Tranquila, tu momento está por llegar. Si alguna de estas cosas te suena, este libro es perfecto para ti: - Estás pensando en ir a comprar tu primer bra - Esperas tu primer periodo (o acaba de llegar) - Has empezado a notar algunos granitos en tu cara - El vello ahora crece aquí y allá... Experimentas emociones y sentimientos intensos, y no puedes controlarlos En Secretos de chicas, Sonya Renee Taylor explica qué pasa durante la pubertad, te ayuda a sentirte orgullosa de tu cuerpo, segura de tí misma y lista para los...