Bacteria get more resistant to antibiotics every year. Learn the reason for this pattern and how scientists are addressing the problem in a six-week unit. Learners analyze different types of bacteria and their adaptations.

What's the future of biotechnology? Explore a hot topic in the fourth and final unit in a series of Biotechnology lessons. Learners develop an understanding of the many issues in bioethics, then create an argument for or against the role...

A collection of resources about tunnels that includes basic facts about tunnels, challenges faced by tunnel diggers, famous tunnels from around the world, and a lab that helps you understand the kinds of forces that keep tunnels from...

Click on a highlighted portion of the skeleton to open up a brief video presentation and written summary explaining how that part of the human has come from our ancient ancestors.

For those who are sun savvy, check out solar cycles and solar storms or conduct an independent investigation of behaviors of the sun.

This graphic from Evolution, traces the evolution of whales from land-dwelling mammals to the aquatic creatures we know today. A PDF is included that diagrams the evolutionary process that is believed to have taken place.

Explore how the events and cultural and political changes that occurred in 1968 came to represent the upheaval and dramatic changes in American life during the 1960s. In this interactive lesson from WGBH, students develop a written...

Consider how U.S. foreign policy changed in the aftermath of WWII, and analyze the philosophical, geopolitical, and economic factors that influenced these changes. In this interactive lesson from WGBH, students develop a written argument...

Trace the causes and debates that led to the Spanish-American War, including "yellow journalism" press coverage, President McKinley's declaration of war, and sentiments about imperialism. In this interactive lesson from WGBH, students...

Assess how the Emancipation Proclamation expanded ideas of freedom and liberty, looking at the antislavery debate that led to the proclamation, the influences on Lincoln's decision, and the provisions of the document. In this interactive...

Explore the motivations for the Louisiana Purchase, as well as the terms of the purchase and its consequences. In this interactive lesson from WGBH, students develop a written argument in response to the question "Do you agree that the...

Explore why the Bill of Rights was added to the Constitution and its enduring impact on defining our rights. In this interactive lesson from WGBH, students develop a written argument in response to the question "How does the Bill of...

This Web quest from the PBS series "Evolution" will help you investigate a variety of types of evidence for evolution.

This video segment adapted from NASA describes the basic characteristics of our star, the Sun. Includes background reading material and discussion questions. Video length: 1 min. 28 sec.

This video segment, adapted from ZOOM, explores the different sounds that a simple drinking straw can produce when you cut the straw and blow into it. [1:56]

Visit with Andres during fiesta time at Paracho Michoacan, Mexico's "guitar town". As Andres shows in this video segment from ZOOM, guitar music goes beyond simple sound vibrations. [2:55]

In this video segment from Nature, learn about cats. Consider the possibility that the cat may become the number one choice for pet owners.

In this video segment from Nature, discover the various roles the cat has played in our history. [6:54]

In this video segment from Nature, learn about the role of dogs in the lives of humans.

An example of the Red Queen hypothesis, the sexual population of Mexican Poeciliid fish is able to keep up with a changing environment, while the asexual populations are not as successful. From Evolution: "Why Sex?" Video length: 4 min....

In this interactive activity featuring videos adapted from the Rutgers PAER Group, students will observe examples of circular motion. Students will then find a common reason why the objects and people presented move in a circle. Includes...

This video segment adapted from NOVA/FRONTLINE demonstrates the physical property of carbon dioxide that causes the greenhouse effect. Includes background reading and discussion questions. [2:26]

This image from GRID-Arendal depicts the major circulation pattern of the ocean, illustrating interactions between temperature, salinity, and depth. Includes a background reading handout and several discussion questions.

This interactive module from the NOVA: "Shark Attack!" web site details the six senses that sharks use to find and capture their prey.