13 Ways to Tell Time Backwards

Schools generate a lot of trash. This lesson has groups collect data about the amount of trash that people generate at school over a period of time. They sort the trash and determine the amounts based upon type. The class determines the...

Is qualitative or quantitative research more convincing when it comes to climate change? In the eighth lesson during this 21-part series, scholars begin by performing a quantitative analysis of deforestation and urbanization. Then, they...

Take your time with this lesson. Junior engineers read about different types of clocks and then work together to build a pendulum time-keeper. There are no hints as to how they might go about accomplishing this complex task, so you may...

Reach for the stars with a fun space science video! Viewers learn about the different types of stars in the galaxy, as well as the ways to organize and classify them based on color and age.

Did you know an insect has unique mouthparts based on what and how it eats? This is a simple way to identify the order an insect belongs to. Watch a video that explains the interesting world of insect mouthparts.

Jr. high learners explore the concept of Elongation. They analyze the phases of the moon and position of the sun in order to create a flip book. They will then use their books to determine the local time using the sun and moon. Excellent!

Can someone really have a "biological clock"? Discover why many organisms on earth have an inherent awareness of where they are in the day's cycle.This video discusses animal adaptations, the earth's revolutions, and how light and...

Cartoon children compare the earth's age to timescales that we understand:a calendar year, the thickness of a book, the human lifespan. This smart film clip is definitely worth adding to your geologic timescale lesson! If you subscribe...

What flies faster than the speed of light? A time traveler! This video explains the time-speed-distance relationship, time dilation, and the theoretical possibilities of time travel in a way that is super engaging. Along with the video,...

What is the fastest way to get from point A to point B if you are going through two different mediums, such as air then water? Scholars explore the way light travels through air, water, acrylic, glass, and diamond as they answer this...