The pH Scale

How do you put something as large as the universe in perspective? Use a series of scale experiments. Classmates collaborate around four experiments to examine the scale of the earth-moon system, our solar system, the Milky Way galaxy,...

In a math or life science class, "mini-me" models are created with cardstock to reflect a 1:10 scale of students' bodies. Learners measure each others' heights with meter sticks, and then reduce the size by 10. After this exercise, they...

A "Causes of the Causes" diagram enables class members to examine the contributing factors to a problem. After reading a poem that models the process, class members, either in gorps or individually, diagram an issues they are passionate...

Help your class cross the finish line as they watch the final video in the series. Pupils complete a set of practice problems to demonstrate the correct way to determine the formulas for ionic mixtures, molecular compounds, and acids.

Does a radioactive cat have 18 half-lives? An understanding of half-life is important in both chemistry and biology, so start your young scientists off the right way — with the good foundation provided by a video that begins with a graph...

Students create their own copies of Phoenix Birds using a grid system.

Nothing flows like J-E-L-L-O! In the final portion of a four-part series, pupils create scale models of microfluidic devices out of gelatin and bendable straws. They use their devices to test various flow rates in the delivery of...

Sound waves travel pretty quickly, but humans can travel faster. Follow along with this short animated video as it investigates the physics behind the breaking of the sound barrier and the sonic booms that are...

Students research measurements of the moon and Earth as well as the distance between the two in order to create scale models of the Earth-moon system. With a marble to be used as the moon, they must determine how large to make Earth...

It turns out that vacuums are not really vacuums. An engaging video lesson explains the process scientists use to create a vacuum. Their efforts get them close, but the video instructor explains why they cannot create a perfect vacuum.