Many people depend on blue crabs from the Chesapeake Bay for their jobs. But overfishing and changes in the blue crabs' habitats have reduced their numbers. Learn how scientists have stepped in to study these blue beauties so that they can keep a healthy crab...

Editeur : Teacher Created Materials
Parution : 2018-07-02
Collection : Smithsonian: Informational Text epub sans DRM

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Over the years, people have looked for ways to improve our imperfect sight. This has led us to the world of optics, which is the study of light and how it travels. What are some of these innovations that have changed how we see the world, and how do they work? Find the...

Editeur : Teacher Created Materials
Parution : 2018-07-02
Collection : Smithsonian: Informational Text epub sans DRM

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Landsat satellites orbit the Earth to get images. Learn how these images are made using heat. Then, find out how these cutting-edge satellites are helping save the planet! Created in collaboration with the Smithsonian Institution, this Smithsonian Informational Text...

Editeur : Teacher Created Materials
Parution : 2018-07-02
Collection : Smithsonian: Informational Text epub sans DRM

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You've probably heard of lions and tigers. Perhaps you've seen them at the zoo. But have you heard of the clouded leopard? This shy member of the cat family is an endangered species. Their shyness makes studying them a challenge for zookeepers and scientists. Find out...

Editeur : Teacher Created Materials
Parution : 2018-07-02
Collection : Smithsonian: Informational Text epub sans DRM

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Amphibians can be found all over the world. There are more than 7,500 kinds of amphibians living in streams, rainforests, deserts, and everywhere in between. Many of them are in danger due to a deadly fungus, but help is on the way! Created in collaboration with the...

Editeur : Teacher Created Materials
Parution : 2018-07-02
Collection : Smithsonian: Informational Text epub sans DRM

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Did you know that swimming pools are used to train astronauts? Athletes use swimming pools to train when they're injured, and doctors use them to help patients feel better. Learn how swimming pools and aquatic therapy help all kinds of people! Created in collaboration...

Editeur : Teacher Created Materials
Parution : 2018-06-01
Collection : Smithsonian: Informational Text epub sans DRM

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