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Learn how zookeepers at the National Zoo keep the animals healthy and happy. This Spanish book features a hands-on STEAM challenge and uses real-world examples to give insight into how the engineering design process is used to solve problems.
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Land has many different characteristics. It can be hilly, rocky, grassy, narrow, and dry. Or, it can be flat, smooth, sandy, wide, and wet! This Spanish book introduces students to the concept of landforms. With images that are easy to identify and clear, simple sentence structures, this science reader simplifies scientific concepts for young students as they improve their reading skills. A fun and easy science experiment and Your Turn! activity provide more in-depth opportunities for additional learning. Nonfiction text features include a glossary and an index. Engage students in learning...
"Some things are so huge or so old that it's hard to wrap your mind around them. But what if we took these big, hard-to-imagine objects and events and compared them to things we can see, feel and touch? Instantly, we'd see our world in a whole new way." So begins this endlessly intriguing guide to better understanding all those really big ideas and numbers children come across on a regular basis. Author David J. Smith has found clever devices to scale down everything from time lines (the history of Earth compressed into one year), to quantities (all the wealth in the world divided into one...
3 million years ago, men built the first stone tools for hunting. 2 million years ago, men walked in a completely upright position and had already discovered fire. 1 million years ago, men organized themselves in groups... Okay, okay, but what about the women? Where were the women in the meantime?
Gayo Plinio (siglos I-II a.C.), conocido como Plinio el Joven, pertenecía a la rica aristocracia italiana propietaria de grandes posesiones agrícolas y administradora de magistraturas municipales. El apoyo de su tío materno, Plinio el Viejo, que los acogió a él y a su madre a la muerte del padre y acabó adoptándolo como hijo, fue decisivo en la vida de nuestro autor. Plinio el Joven agrupó en torno a su persona el círculo cultural y político probablemente más importante de su tiempo, del que formaban parte ilustres escritores como Marcial, Tácito, ya en el cénit de su gloria, o...
Provides information about phenomena throughout the solar system and facts about oceans, storms, animals, and other features of the Earth.
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