CK-12 Foundation
Ck 12: Earth Science: Volcano Characteristics
[Free Registration/Login may be required to access all resource tools.] What volcanoes are and where they are located.
CK-12 Foundation
Ck 12: Earth Science: Volcanoes at Plate Boundaries
[Free Registration/Login may be required to access all resource tools.] Volcanoes most often occur at plate boundaries.
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Ck 12: Earth Science: Wegener and the Continental Drift Hypothesis
[Free Registration/Login may be required to access all resource tools.] How Wegener's hypothesis of continental drift was refined.
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Ck 12: Earth Science: Greenhouse Effect
[Free Registration/Login may be required to access all resource tools.] Describes different greenhouse gases and how human actions impact the greenhouse effect.
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Ck 12: Earth Science: Volcanoes at Hotspots
[Free Registration/Login may be required to access all resource tools.] Volcanoes can form at hotspots away from plate boundaries.
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Ck 12: Earth Science: Water Distribution
[Free Registration/Login may be required to access all resource tools.] How water is distributed throughout the world.
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Ck 12: Life Science: Origins of Life
[Free Registration/Login may be required to access all resource tools.] There is good evidence that life has probably existed on Earth for most of Earth's history. Fossils of blue-green algae found in Australia are the oldest fossils of...
CK-12 Foundation
Ck 12: Life Science: Timeline of Evolution
[Free Registration/Login may be required to access all resource tools.] For life to evolve from simple single-celled organisms to many millions of species of prokaryotic species to simple eukaryotic species to all the protists, fungi,...
CK-12 Foundation
Ck 12: Life Science: Theory of Evolution by Natural Selection
[Free Registration/Login may be required to access all resource tools.] Do you ever wonder why some birds are big like ostriches and some birds are small like robins? Or why a lion has a mane while a leopard has spots? In the 19th...
CK-12 Foundation
Ck 12: Life Science: Human Population
[Free Registration/Login may be required to access all resource tools.] How quickly is the human population growing? If we look at worldwide human population growth from 10,000 BCE through to today, our growth looks like exponential...
CK-12 Foundation
Ck 12: Earth Science: Types of Soils
[Free Registration/Login may be required to access all resource tools.] Describes different types of soil.
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Ck 12: Earth Science: Universe
[Free Registration/Login may be required to access all resource tools.] Explains how we came to understand the Universe.
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Ck 12: Earth Science: Water Pollution
[Free Registration/Login may be required to access all resource tools.] Describes the sources of water pollution.
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Ck 12: Earth Science: Weather Versus Climate
[Free Registration/Login may be required to access all resource tools.] Compares and contrasts weather and climate.
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Ck 12: Earth Science: Wind Power
[Free Registration/Login may be required to access all resource tools.] How wind can be used to generate power, and its consequences.
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Ck 12: Scientific Method (Basic)
[Free Registration/Login may be required to access all resource tools.] This is a basic introduction to the scientifice method that includes links to instructional videos, grade-level texts, interactive activities, and review materials.
CK-12 Foundation
Ck 12: Life Science: Insects
[Free Registration/Login may be required to access all resource tools.] Insects, with over a million described species, are the most diverse group of animals on Earth. They may be found in nearly all environments on the planet. No matter...
CK-12 Foundation
Ck 12: Life Science: Preserving Water Sources
[Free Registration/Login may be required to access all resource tools.] It might seem like there is plenty of water on Earth, but that's not really the case. Water is a limited resource. That means that it is used faster than it is...
ClassFlow
Class Flow: The Layers of the Earth
[Free Registration/Login Required] The lesson teaches fifth grade students about the 4 layers of the Earth. Characteristics of each layer are presented. The lesson incorporates video, student participation, and Activote assessment. The...
ClassFlow
Class Flow: Anatomy of the Sun
[Free Registration/Login Required] This is a middle school science lesson on the Sun. Activote questions are included. Submitted for Lucinda Schlotterback, in Sarasota County, FL.
CK-12 Foundation
Ck 12: Life Science: Importance of Protists
[Free Registration/Login may be required to access all resource tools.] Humans could not live on Earth if it were not for protists. Why? Protists produce almost one-half of the oxygen on the planet, decompose and recycle nutrients that...