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Interactive
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PhET

Radioactive Dating Game

For Students 6th - Higher Ed Standards
Uranium 235 has a half-life of over 700 million years and is the fuel used in the atomic bomb dropped on Hiroshima, Japan. Pupils see the half-lives and decay rates of Carbon-14 and Uranium-238. They also take measurements of these two...
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Activity
Exploratorium

Radioactive Decay Model

For Teachers 9th - 12th
Toss 100 pennies (or poker chips or any other two-different-sided objects) and remove all of those displaying tails. Line them up and repeat. The lines of pennies collected get smaller each time, successfully representing half-life.
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Worksheet
Curated OER

Get a Half-Life Student Worksheet

For Students 6th - 8th
Young scientists use a worksheet to help them perform a lab on the decay of a radioactive element. The worksheet serves as both a task guide and a lab sheet for pairs of learners. This activity requires a calculator and has excellent...
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Assessment
Curated OER

2000 U.S. National Chemistry Olympiad National Exam - Part I

For Students 9th - 12th
The National Chemistry Olympiad exams are comprehensive tests covering an entire  year of chemistry concepts. You can use them as practice for competing in the challenge, or simply as a review, or as an actual final exam for your general...
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Instructional Video16:36
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Flipped Math

Linear vs. Exponential

For Students 9th - 10th Standards
Linear or exponential?. Learners watch an informative video comparing situations that may be modeled by either a linear or exponential relationship. Pupils determine the type of relationship and then create a function that models the...
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Lesson Plan
Pace University

Grades 9-12 Earth Science

For Teachers 9th - 12th Standards
How has Earth changed over time? Pupils explore the topic in a differentiated instruction unit on the geological time scale. After a pre-assessment to gauge knowledge, class members divide into groups based on their ability levels and...
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AP Test Prep
College Board

2014 AP® Chemistry Free-Response Questions

For Students 10th - 12th Standards
More than half of AP Chemistry test takers earn a high enough score to get college credit. Improve that statistic by using past test questions including precipitate, molarity, and chemical equations to prepare for a future exam. The...
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Lesson Plan
Kenan Fellows

Half-Life

For Teachers 9th - 12th Standards
Scholars shake their way to understanding half-life with the help of candy. They observe and record which side candy lands on to graph the exponential decay in the fifth lesson of seven integrating chemistry and algebra. Combining...
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Interactive
CK-12 Foundation

Marie Curie's Classroom

For Students 9th - 12th Standards
What makes some elements stable and others radioactive? Scholars adjust the number of protons and neutrons in an element then observe its decay. The simulation includes a graphical representation and the chemical formula, as well as...
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Interactive
CK-12 Foundation

Radiocarbon Dating

For Students 9th - 12th Standards
How do we know how long ago a dinosaur lived or an ancient fire pit was used? Scholars learn about the application of carbon dating and half lives to discover things about the past. They adjust the amount of radioactive carbon in the...
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Handout
National Institute of Open Schooling

Chemical Kinetics

For Students 9th - 12th Standards
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...
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Interactive
PHET

Alpha Decay

For Students 6th - 12th Standards
There are different types of radioactive decay, and alpha decay is when there are too many protons in a nucleus. Here is a simulation that shows alpha particles being emitted from a polonium nucleus. Learners see how radioactive decay...
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Activity
It's About Time

Special Relativity

For Teachers 7th - 12th
According to Einstein's Theory of Special Relativity, time moves slower when you're working. That's not quite what it says, and in a hands-on lesson, pupils learn the actual theory. Scholars plot the half life of muons, then compare it...
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Worksheet
Mt. San Antonio Collage

Exponential and Logarithmic Functions

For Students 9th - 12th Standards
High schoolers grow their skills exponentially after completing this thorough activity. Going from simple to difficult, it hits all the major skills regarding exponential and logarithmic functions including simplifying, solving,...
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Lesson Plan
Virginia Department of Education

Isotopes

For Teachers 9th - 12th
Lead your class through the amazing world of isotopes as they investigate the various properties they contain and further understand their respective location on the periodic table. They explore half-lives and radioactivity as each...
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Lesson Plan
Virginia Department of Education

Radioactive Decay and Half-Life

For Teachers 9th - 12th
Explain the importance of radioactive half-life as your high school biologists demonstrate the concept by performing a series of steps designed to simulate radioactive decay. Pupils use pennies to perform an experiment and gather data....
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Worksheet
University of Kansas

Exponential and Logarithm Problems

For Students 9th - 12th Standards
This worksheet manages to provide both fun and serious work solving exponential and logarithmic application problems in engaging story lines and real-life situations. A strong emphasis on science applications and numbers pulled straight...
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Worksheet
Curated OER

Chemistry 142 Exam 1

For Students 10th - Higher Ed
In this chemistry exam worksheet, students solve fifteen problems related to acids and bases, rates of reactions, and half life.
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Assessment
Curated OER

Physics 152 Fall 2004 Final Exam, Parts A, B, C, D

For Students 9th - Higher Ed
At the end of a general physics course focused on light and electricity, you can administer this exam. Concepts covered include electromagnetism, circuits, induction, light rays, lenses and mirrors, characteristics of light, electron...
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Worksheet
Curated OER

Unit 2 ~ Atomic Structure

For Students 9th - 12th
As an atomic structure reference and review tool, this handout fits the bill. The first page provides definitions and tables of orbitals, electrons, and energy levels. The second page is an opportunity to practice determining numbers of...
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Worksheet
Curated OER

Get a Half Life!: Student Worksheet

For Students 6th - 8th
Upper elementary or middle schoolers will explore non-linear functions, graphing, and the curve of best fit through real-life data collection and trial analysis. They explore the concept of half-life and radioactive decay using M&Ms,...
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Lesson Plan
National Museum of Nuclear Science & History

Nuclear Popcorn

For Teachers 7th - 12th
Make your instructional activity on radioactive decay pop with this lab exercise. Using popcorn kernels spread over a tabletop, participants pick up all of those that point toward the back of the room, that is, those that represent...
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Assessment
Curated OER

Physics Final Exam, Part A

For Students 11th - 12th
Here is a comprehensive and cohesive final exam for your high school physicists. A variety of question styles are incorporated, such as multiple-choice and problem-solving. Topics are too many to list, so you will want to review the exam...
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Worksheet
Curated OER

Half-life Worksheet

For Students 11th - 12th
In this half-life worksheet, students determine how long it takes for a 100g sample of AU-198 to decay to 6.25g. Then they determine the half-life of a radioactive isotope if a 500.0g sample decays to 62.5g in 24.3 hours. Students also...