How Old Is Old?

How old is the plant? Here is a task that presents the exponential decay function for carbon 14 in a plant. Pupils use the function to estimate the amount of carbon 14 in the plant when it died and analyze the function to find what the...

Eight neat slides lead to the understanding of how geologists have determined Earth's age. Most of the slides are dedicated to explaining the absolute dating method of assessment. Color diagrams display radioactive isotopes and a graph...

How do you put 4.5 billion years into terms that young scholars can understand? Use your arms! Examine just how long our Earth has been around in a short video. The content includes the appearance of single-celled, then multicellular...

Dry erase markers work on desks, doors (made of shiny particle board), and even mirrors! A funny video explores why dry erase markers leave behind marks when used. The narrator explains what the markers are made of, specifically the...

The evolutionary process of the development of brains and their placement in the bodies of animals is the focus of a video that also discusses the genes that control the brain and the protections that developed along with it.

What is the Uncertainty Principle? A succinct video describes the uncertainty principle as wave behavior.

A timely resource illustrates the effects of the passing years on sedimentary rock formation! Young geologists discover just how long it takes to create shale, slate, and other sedimentary rocks. The interactive also shows...

Students explore the aging process. Students examine the concept of age from a child's perspective and discuss that aging is relative. Students read the book, How Old is Old? and engage in several different activities on age and life spans.

Shake and shake the ketchup bottle, none will come, and then a lot will pour out! Finally, a scientific answer to the age-old question of why it is nearly impossible to get this coveted condiment out and onto your french fries! Along the...

Take an elevator down under the surface of the skin! Animations show that new skin cells are formed and the old ones are shed in the epidermis, how melanin provides color and nerves and blood vessels reside in the dermis, and what the...