Ecology

Homo Sapiens Versus Neanderthals

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Explore the origins of modern humans. Fossil evidence from Middle East caves and elsewhere has revealed some competitive advantages modern humans, known as Homo sapiens, are believed to have held over the more archaic human species, Neanderthals. For example, during the time in which the two species may have coexisted, Homo sapiens lived on high ground, from which they could survey the landscape and plan their hunting expeditions. Some scientists have theorized that the success of this strategy may have contributed to the demise of the valley-dwelling Neanderthals, who became extinct about 30,000 years ago. Adapted from NOVA.

This video is available in both English and Spanish audio, along with corresponding closed captions.

Animal Migration | Science Trek

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Animal migrations don’t just happen in the spring and aren’t just something birds do. Lots of different animals migrate and for good reasons. Why? What is it that drives animals to move from one part of the country to another and then back again?

Caribbean Sea! | Wild Kratts

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Chris and Martin explore the Caribbean Sea to learn about the creatures and habitat. They learn how fish use their fins to swim--or fly!

SciGirls | Asombrosos Arboles 02: Recolección de Datos (Data Collection)

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The SciGirls are collecting data about trees in the city and the forest. They go to the rain forest to measure a tree and look at the plants and animals that live on and around it. The SciGirls will compare this data with what they collected about the tree in the city.

Water: Part I (Middle School) | Saving Our Waters

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Students view news clips regarding water quality issues within the Lake Champlain watershed. After viewing the clips, students engage in a class discussion to record ideas and responses to the question: what evidence can we find that water quality problems exist in our watershed?

These Saving Our Waters Curriculum Connections were created by High School and Middle School teachers seeking to engage our next generation of stewards. The 12 Curriculum Connections naturally connect to the Next Generation Science Standards.

The Importance of Freshwater Mussels | Iowa Land and Sky

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Freshwater mussels are historically a cornerstone species to Iowa's ecosystems. While industry and modern life has threatened their existence, they continue to be a valuable resource to every organism that calls Iowa home. 

Flowers and Grasses of Iowa | Iowa Land and Sky

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A colorful look at a variety of flowers and grasses found throughout Iowa.

Orbit Makes a Web - Wild Kratts | PBS KIDS Lab

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Use this video to teach children about spider silk, the toughest material made by any animal on the planet. Chris and Martin watch Orbit, the Spider, make a new orb web.

Utiliza este vídeo par enseñar a niños acerca de la seda de araña, el material más resistente hecho por animal. Chris y Martin miran a Orbit, la araña, hacer una telaraña.

SciGirls | Asombrosos Arboles 03: Análisis de Datos (Data Analysis)

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The SciGirls look at the data they collected from the tree in the city and in the forest. They compare the data they found to see if there are any differences. Additionally the girls look at some photos to understand how old the trees are and find out some surprising information.

Water and Soil | A Personal Relationship

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Interactions between living and non-living things in ecosystems support the survival of living things. In this lesson, students will identify living and non-living things in various ecosystems, explore interactions that occur in natural and managed ecosystems, and identify patterns of interactions that exist across ecosystem types.

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