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Browse results: National K -12 Subject

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Animal Body Plans: Homeobox Genes

Animal Body Plans: Homeobox Genes

The homeobox genes that define the basic body plan of mice and fruit flies are illustrated in this graphic from The Human Evolution Coloring Book by Adrienne Zihlman. The accompanying article describes how these genes act as "molecular architects" in all animal species. OER Level

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9-12

Document

Animal Mouths

Animal Mouths

This collection of images of six different creatures, including insects and carnivorous vertebrates, illustrates the wide range of mouth types that exist within the animal kingdom. OER Level

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K-8

Image

Atmospheric Carbon Dioxide Levels

Atmospheric Carbon Dioxide Levels

Earth is warming because of an increase in greenhouse gases, including carbon dioxide (CO2). Explore what can be done to slow or stop continued climate change.

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4-12

Document

Bird Beak Gallery

Bird Beak Gallery

This collection of images of 10 different birds illustrates the diversity of bird beaks. OER Level

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K-8

Image

Crocodiles! Clickable Croc

Crocodiles! Clickable Croc

This interactive feature from the NOVA "Crocodiles!" Web site details some of the characteristics that have enabled crocodiles to thrive for 200 million years.

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6-8

Interactive

Decreasing California Snowpack

Decreasing California Snowpack

Approximately 40 percent of California's surface water supply originates from the snowpack in the Sierra Nevada Mountains. However, climate change is significantly altering this precious water source.

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4-12

Document

DNA on the Witness Stand

DNA on the Witness Stand

In this article, Dr. Eric Lander of the Human Genome Project comments on the use of DNA as an identification tool -- the theoretical versus the practical results. OER Level

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9-12

Document

Farallon Islands  Map

Farallon Islands Map

With this map from QUEST produced by KQED, explore what it is like to live on the rocky remote Farallon Islands for both birds and the scientists who explore them.

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5-12

Document

Forecasting Suitable Habitat for North American Wolverines From the Present to 2100

Forecasting Suitable Habitat for North American Wolverines From the Present to 2100

Learn what plants and animals must do in order to survive significant environmental changes.

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4-8

Document

Function of Fever

Function of Fever

Fevers are a sign of infection, but they may also be part of the cure. This drawing illustrates Matthew Kluger's lizard study, which supports the notion that fever can be beneficial.

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6-12

Image

The Greenhouse Effect and Greenhouse Gases

The Greenhouse Effect and Greenhouse Gases

Increasing greenhouse gases are contributing to global warming, which is changing our climate.

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4-8

Document

How DNA Evidence Works

How DNA Evidence Works

In this article by An Meeker-O'Connell, discover how DNA evidence is processed before it goes to court. OER Level

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9-12

Document

How the Woodpecker Avoids a Headache

How the Woodpecker Avoids a Headache

This diagram from Rainbird Publishing describes the specialized physical characteristics that allow woodpeckers to create some of the most secure nests in the bird world.

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6-8

Image

KET Image Bank: Insects

KET Image Bank: Insects

Browse through thumbnail images of various insects in this KET Image Bank interactive catalog. Clicking a thumbnail will take you to a larger image for download.

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Pre-K-12

Interactive

KET Image Bank: Mammals

KET Image Bank: Mammals

Browse through thumbnail images of different species of mammals in this KET Image Bank interactive catalog. Clicking a thumbnail will take you to a larger image for download.

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Pre-K-12

Interactive

KET Image Bank: Reptiles

KET Image Bank: Reptiles

Browse through thumbnail images of reptiles in this a KET Image Bank interactive catalog. Clicking a thumbnail will take you to a larger image for download.

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Pre-K-12

Interactive

Mitochondria

Mitochondria

Often referred to as the powerhouses of the cell, mitochondria provide the energy that powers nearly every cellular process. This essay by John Ross describes in detail the structures and functions of these amazing organelles. OER Level

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9-12

Document

Molecular Clocks: Proteins That Evolve at Different Rates

Molecular Clocks: Proteins That Evolve at Different Rates

From The Human Evolution Coloring Book by Adrienne Zihlman, four different proteins from humans and horses are compared in this graphic and article, and the reasons each protein evolves at its own characteristic rate are discussed. Each protein is useful for measuring evolutionary change over a different time scale. OER Level

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9-12

Document

Molecular Level of Genetics

Molecular Level of Genetics

Get down to the molecular nitty-gritty of DNA replication and protein synthesis in this article by Dennis O'Neil. OER Level

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9-12

Document

Projected Sea Level Rise

Projected Sea Level Rise

Climate change is affecting our oceans in more ways than one. Explore how climate change is affecting sea levels.

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4-12

Document

Record of Time

Record of Time

Enter the exciting world of dating ... fossil dating, that is. From Record of Time by anthropologist Dennis O'Neil. OER Level

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6-12

Document

Tetrapod Limbs

Tetrapod Limbs

This illustration from Evolution by Monroe W. Strickberger shows the remarkable similarities between the bones in the forelimbs of various tetrapods, all of whose limbs serve very different functions.

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6-8

Image

Understanding Gene Testing

Understanding Gene Testing

In this article by the National Cancer Institute and the National Center for Human Genome Research, find answers to your questions about genetic testing. OER Level

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9-12

Document

Water Planet: How the Water Cycle Works

Water Planet: How the Water Cycle Works

The climate change-induced animations produced by KQED, are designed to illustrate changes to the water cycle that may occur over many years.

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4-12

Document

Whales in the Making

Whales in the Making

This graphic from Evolution, traces the evolution of whales from land-dwelling mammals to the aquatic creatures we know today. OER Level

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6-12

Document

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