It's In the Numbers

Weather versus climate: weather relates to short time periods while climate averages the weather of a period of many years. Scholars learn about average temperature and precipitation in various climate zones and then apply statistics...

Emerging biochemists more fully understand the flow of energy in ecosystems as they explore the laws of thermodynamics and relate them to energy transfer in food chains. They also investigate heat loss from the human body and how...

Ever wonder why old headstones in cemeteries are difficult to read? Learn about acid-base reactions and how these contribute to the defacing of statues and headstones and how improving the way we burn coal has decreased these effects.

What is motion and why does it often follow a straight line? Share the video with your class so they understand the answers to this question and others. Pupils participate in discussions on displacement, acceleration, time, velocity and...

The amount of information you can learn about an element from the periodic table is amazing! Young scientists learn how to interpret the atomic number and atomic mass. Using a carbon atom as an example, the instructor describes the...

Pupils explore objects in space in terms of their distance and size. They learn how to write and interpret exponential notation, how distances are related to time and about light years, and apply all of this knowledge to objects in the...

High schoolers research the hydroelectric plant removal project that is underway on the Klamath River. They consider the replacement of hydroelectric dams with geothermal power plants and form an argument based on their viewpoints. Since...

When scientists confirm new elements, do these elements always fit in on the periodic table where scientists expect? The second video in a series of 15 discusses how the elements are organized on the periodic table. The resource includes...

With over five million babies being born through in vitro fertilization in the last 40 years, sex education is taking on a whole new look. After first walking through natural process of reproduction, this short video goes on to explore...

Flashy animation, superb narrative, and a touch of bad-hair-day humor explain the nature of chiral molecules in this five-minute feature. Viewers find out how chemist Jacobus Van't Hoff proposed that some saturated carbon molecules are...