This instructional activity from Illuminations looks at exponential decay using the example of how kidneys filter blood.

This section introduces the transcendental number e which is a special number that is considered a natural base. In addition to exploring how to simplify and solve equations with e, this section also investigates how it can be used to...

Third graders learn about the interdependence of animals and trees in nature and the cycles of growth and decay. Students also learn about the importance of preserving balance in nature and what happens when we upset that balance. While...

In this lesson, students will use the exponential function equation to solve real-life problems involving exponential growth and decay including the compound interest formula.

Through this demonstration students will understand radioactive including its probabilistic nature and begin to see how scientists use computational thinking to model complex phenomena.

Take an interactive quiz over radioactivity. After completing the quiz, check your score, and then revisit any incorrect question for further review.

An interesting essay about the prevalence of radioactivity in nature, with chart showing where it is found and information about half lives.

An in-depth lesson which teaches you how to graph exponential equations. Examples are worked through step by step and explained in detail for different exponential equations.

Find out about radioactivity, and how it occurs inside an atom's unstable nucleus.

Read this passage and study the graphics to complete a five-question quiz on the characteristics of various therapeutic radioisotopes.

Site provides the ABC's of nuclear science including radioactivity and gamma decay to fission and comic rays.

Learn how to avoid tooth decay by avoiding sugary snacks and treats. Try a snack from the "smart snack food list" and reduce the amount of sugar you eat on a daily basis.

This entry provides a summary of radioactivity in nature and the decay chain.

Why is pop bad for teeth? This site from Family Gentle Dentistry provides facts that everyone should know about the dangers of drinking too much soda pop. "Sip all day and get decay," and other things is the overriding message.

Have you ever wondered what causes a cavity? Learn what roles sugar and plaque play in tooth decay. For those who are interested there is also even a slideshow about root canals.

[Free Registration/Login Required] This flipchart discusses food groups, balanced diets, healthy teeth choices, types of teeth humans have, tooth decay and energy.

A good illustration and a simple explanation of gamma-ray decay.

[Free Registration/Login Required] Use the provided symbols to generate and build chemical equations. Then answer one multiple choice challenge question about the topic.

If you are a budding environmental scientist, archeologist. physical scientist, or bacteriologist, then this is the site is for you. You will be looking at the differential equation of proportional change and how it is related to the...

Students explore exponential functions and their graphs. Exponential decay, the natural exponential function, and compound interest are examined. Proofs, explanations, and examples are included.

Students experience how exponential functions are related to the stock market through exponential growth and decay graphs.

This article presents illustrations and a general discussion about radiation.

In this food science fair project, the student will determine if thermotherapy can inhibit strawberries from becoming moldy and decaying. The Science Buddies project ideas are set up consistently beginning with an abstract, objective,...

Have you ever dreamed of a world where you could take the scraps from last night's dinner and toss them into your car's fuel tank and make gas? Well, we're not quite in "Back to the Future" yet, but in this energy science fair project,...