During our exploration of each previous lesson, we have learned about many of the factors that contribute to the ongoing destruction of our environment. In our final lesson, we will make a holistic appraisal of the impact that each of...

The innovative resource examines images of the Sun, Moon, Pluto, and all eight planets in the Solar System. Learners calculate the diameter of each object and rank the objects in order of size. The activity has an interactive online...