National Institute of Open Schooling
Chemical Kinetics
Not all chemical reactions happen at the same rate because some, like explosions, occur quickly and some, like rusting, occur over time. Here, learners explore chemical reactions and their rates in the 16th lesson of 36. Through readings...
Tasha McKelvey
Clay Whistles
Create clay whistles with your elementary or middle school students. The project is outlined in great detail here, complete with step-by-step photographs, finished examples, a materials list, student handouts, and a rubric. Students...
Chandler Unified School District
Ben Franklin Aphorisms
Benjamin Franklin's famous aphorisms are a perfect time capsule of colonist values in the mid-18th century, as well as a clever reminder of the way life still works today. Middle and high schoolers select one aphorism to interpret...
Smithsonian Institution
Black Diamond
Score a home run with this packet of information on the very first player of the Negro League to be elected into the National Baseball Hall of Fame — cultural groundbreaker and sports legend Satchel Paige. These worksheets include a...
Charleston School District
Estimating Values of Expressions
You can't evaluate an irrational root expression without a calculator—or can you? Scholars estimate the value of roots within an expression to approximate the value of the expression. Expressions include a mix of square roots and whole...
American College of Sports Medicine
Selecting and Effectively Using Hydration for Fitness
How much water does your body lose during exercise? How much should you hydrate during and after exercise? Address the importance of hydration with your young athletes using this informative handout.
Curated OER
The Last Lecture: Concept Analysis
Designed as an overview for instructors using The Last Lecture for the first time, this packet provides an overview of Randy Pausch and Jeffrey Zaslow's book.
Appalachian State University
Glory: Motion Picture Study Guide
This is an excellent resource for teachers to use for incorporating the motion picture Glory into the classroom! Breaking down the film into particular noteworthy and telling scenes, the guide offers important considerations for...
Curated OER
The Planet Mars
In this worksheet on the planet Mars, students look at a picture of the planet and read accompanying facts, along with a brief paragraph.
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.
Texas Education Agency
Texas Gateway: Ap Physics I: Appendices: Atomic Masses
This is a chart of the elements including the atomic mass, atomic number, symbol, half-life, and more.
University of Colorado
University of Colorado: Physics 2000: Halflife
An interactive tutorial on half life. Very readable and has a little extra for the advanced student.
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 Michigan
University of Michigan: Radioactivity in Nature
An interesting essay about the prevalence of radioactivity in nature, with chart showing where it is found and information about half lives.
Greek Gods
Greek Gods: Demigods & Spirits: Nereus, a Marine Deity
Learn about Nereus, a truthful and good-natured marine deity, who went from being half fish and half man to fully human and was father to 50 beautiful mermaids, the Nereids.
Physics4kids
Physics4 Kids: Modern Physics: Releasing Particles
Explains basic information about radioactivity. Learn about half-life through text and video.
Smithsonian Institution
National Museum of Natural History: Paleobiology: Absolute Dating
An explanation of radiometric or absolute dating of geological formations based on using the half-life of radioactive elements to figure out how old given rock layers are. A link on the left provides information about relative dating as...
Science Struck
Science Struck: Isotopes of Carbon
Describes the characteristics of carbon and what an isotope is. Presents a chart of carbon isotopes listing nuclide symbol, atomic weight, half-life, and nuclear spin, as well as a second chart listing radioactive carbon isotopes....
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.
Countries and Their Cultures
Countries and Their Cultures: Pende
The Pende occupy a territory that extends from the banks of the Lutshima, a tributary of the Kwilu, to the Kasai. The last colonial census (1959) indicated that there were 200,000 western Pende and another 40,000 Pende in Kasai, the...
PBS
Pbs: American Experience: Joseph Henry Lays Groundwork for the Telephone
This is the man who most encouraged Bell to invent the telephone. Bell said, "But for Henry, I never would have gone ahead with the telephone." This is a fascinating account both of Bell's invention and of Henry's life. Half a biography,...
Science Struck
Science Struck: How Does Radioactive Decay Work?
Explains the processes of radioactive decay in primary and secondary modes.
Purple Math
Purplemath: Logarithmic Word Problems
Logarithmic word problems generally involve evaluating a given logarithmic equation at a given point, and solving for a given variable; they're pretty straightforward. This resource contains worked examples to demonstrate the reasoning...
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...
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