PBS
Pbs Teachers: Structured Treatment Interruption
Determine how studying the evolution of the HIV virus led medical experts to give patients a "holiday" from drugs, weakening the mutated, drug-resistent genes. Discover how this backward evolution works.
PBS
Pbs Teachers:scientific American: Affairs of the Heart: Exploring Vessel Physics
Explore the relationship between pressure and vessel diameter and create a model that represents how elevated blood pressure may affect weakened vessels. Design and critique a repair device.
PBS
Pbs: The Conquistadors: Beginning of the End of the Inca Empire
A look at the Inca Empire as rumors began to fly about pale strangers arriving on the coast. Read about the illnesses and civil wars that weakened the empire just in time for the appearance of the conquistadors. Be sure to click on the...
CK-12 Foundation
Ck 12: Immunity
[Free Registration/Login may be required to access all resource tools.] Is giving shots to young children a good thing? Many, if not most, children hated going to the doctor, as it often meant getting a shot. Why? The shot actually...
TeachEngineering
Teach Engineering: Our Amazing Skeleton
This lesson covers the topic of human bones and joints. Students learn about the skeleton, the number of and types of bones in the body, and how outer space affects astronauts' bones. Students also learn how to take care of their bones...
Read Works
Read Works: Pumping Up the Heart
[Free Registration/Login Required] An informational text about the heart and what can be done when the muscle weakens. A question sheet is available to help students build skills in reading comprehension.
![Wnet: Thirteen: Freedom: A History of Us: Revolution: Continental Congress [Pdf] Lesson Plan](https://d15y2dacu3jp90.cloudfront.net/images/attachment_defaults/resource/large/FPO-knovation.png "Wnet: Thirteen: Freedom: A History of Us: Revolution: Continental Congress [Pdf] Lesson Plan")
PBS
Wnet: Thirteen: Freedom: A History of Us: Revolution: Continental Congress [Pdf]
A lesson plan from the producers of the 16-episode PBS series "Freedom: A History of US" that examines the rules by which the Continental Congress governed colonial America. Learners will identify people who held positions of leadership...
University Corporation for Atmospheric Research
Ucar: How Thunderstorms Form
Learn how most thunderstorms form with three stages: the cumulus stage when storm clouds form, the mature stage when the storm is fully formed, and then the dissipating stage when the storm weakens and breaks apart.
iCivics
I Civics: Dred Scott v. Sandford (1857)
This mini-lesson covers the basics of the Supreme Court decision that determined that Dred Scott, having lived in a free territory, was not entitled to his freedom. Students learn about the impact of the Court's decision, and how it was...
Khan Academy
Khan Academy: Two Flu Vaccines (Tiv and Laiv)
Understand the differences between TIV (dead virus) and LAIV (alive, but weakened virus) and the population that should get which one.
A&E Television
History.com: The Mariel Boatlift: How Cold War Politics Drove Thousands of Cubans to Florida in 1980
After Fidel Castro loosened emigration policies, some 125,000 Cubans landed on U.S. shores over a span of five months. The Mariel Boatlift of 1980 was a mass emigration of Cubans to the United States. The exodus was driven by a stagnant...
A&E Television
History.com: The Mariel Boatlift: How Cold War Politics Drove Thousands of Cubans to Florida in 1980
After Fidel Castro loosened emigration policies, some 125,000 Cubans landed on U.S. shores over a span of five months. The Mariel Boatlift of 1980 was a mass emigration of Cubans to the United States. The exodus was driven by a stagnant...
Other
Macrohistory: Sargon the Great, Sumerians and Babylon
The decline of Sumer was caused by salinization which led to hunger and malnutrition. Sargon the Great easily defeated the weakened Sumerians to establish the Akkadian empire. Study the rise and fall of the Akkadian empire and view a...
Curated OER
Kids Health: Osteoporosis
When someone's bones weaken they are said to have osteoporosis. Learn all about the different types, signs and symptoms, and how it is treated. Find out what you can do to prevent getting it as an adult.
Stephen Byrne
History for Kids: The Fall of the Roman Empire
Article ending with a short quiz for kids gives an overview of the weakening and eventual fall of the Roman Empire.
Curated OER
Etc: Maps Etc: Ethnolinguistic Groups of China, 1971
" Ethnolinguistic Groups - Almost all inhabitants of mainland China are of Mongoloid stock, and ethnic distinctions in the country are largely linguistic rather than racial. The Han comprise nearly 95 percent of the population; the...