Curated OER
The Ozone Hole from 1980
In this ozone worksheet, students are given six pictures of the ozone layer from 1980 to 2005. Each pictures depicts the changes in the ozone layer.
It's About Time
Orbits and Effects
What does your world revolve around? Challenge the class as they learn about orbits and the effects of them on our modern world. Young astronomers begin by measuring ellipses and calculating the eccentricity of Earth's orbit. Then, they...