CK-12 Foundation
Ck 12: Half Life
[Free Registration/Login may be required to access all resource tools.] In this module, students will explore the radioactive decay process in terms of balanced nuclear equations to discover the concept of half-life.
Science Struck
Science Struck: Half Life in Nuclear Chemistry
Explains what is meant by the half-life of a radioactive element and how it is calculated.
Department of Defense
Do Dea: Ap Calculus: Radioactivity and Half Life [Pdf]
Apply the Law of Exponential Change to solve a "real-world" science problem. Formulas and examples are provided. Great review for the AP Calculus test!
Science Struck
Science Struck: List of Radioactive Elements
Learn about radioactivity, the different types of radioactive decay, isotopes, and half-life of a radioactive element. Includes a long chart listing radioactive elements, atomic number and mass number, decay type, and length of half-life.
University of Virginia
Miller Center at Uva: u.s. Presidents: James Abram Garfield: Life Before the Presidency
James A. Garfield wasn't a president for very long before he was cut down by an assassin, but reading about his political life before his presidency gives a good look at his political life and his political strategy. It also shows the...
PBS
Pbs Learning Media: The Dating Game: Radioactive Carbon
In this media-rich essay from the NOVA: "Mystery of the First Americans" Web site, learn about the atomic structure of radioactive carbon and how it can be used to determine the age of organic remains, such as bones and teeth.
Science Struck
Science Struck: Bromine Isotopes
Describes the chemical properties of bromine and what an isotope is. Presents a chart of bromine isotopes listing nuclide symbol, neutron number, isotopic mass, and half-life, as well as a second simpler chart with more bromine isotopes.
National Humanities Center
National Humanities Center: Toolbox Library: Religion: Henry David Thoreau
The National Humanities Center presents collections of primary resources compatible with the Common Core State Standards - historical documents, literary texts, and works of art - thematically organized with notes and discussion...
American Geosciences Institute
American Geosciences Institute: Earth Science Week: Dating Popcorn
In this activity, students use popcorn to simulate the process scientists use to date layers in an ice core.
Science Struck
Science Struck: How Does Radioactive Decay Work?
Explains the processes of radioactive decay in primary and secondary modes.
National Health Museum
Access Excellence: Cells on a Ceiling
In this lesson plan site, each student is assigned a cell part to research, create, and place inside of a clear plastic drop cloth (the cell) the size of one-half of the classroom ceiling.
Alabama Learning Exchange
Alex: Alabama Biographies of the 20th Century
In this lesson, students will recognize and examine the lives of Alabamians who have impacted the lives of others and the history of the state with their notable contributions during the first half and last half of the twentieth century....
Country Studies US
Country Studies: The Struggles of Labor
This site discusses how for much of the latter half of the 1800s, the life of the common laborer was horrendous. Working in a unsanitary factory, for at least 10 hours a day, making far less than needed to survive, the struggles of the...
Northwestern University
Northwestern University: Edward S. Curtis's the North American Indian
The Library of Congress presents over 2,000 prints from the work of the famed photographer,Edward S. Curtis, who recorded Native American dress, ceremonies, life, and culture representing over 80 tribes during the first half of the 20th...
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