Journey Through the Universe
Impact Craters: A Look at the Past
The Galle crater on Mars is also known as the Happy Face crater because of its appearance. First, scholars use pebbles and flour to simulate craters and study their properties. They then apply this knowledge to help decipher the history...
Messenger Education
Exploring Exploring
The reason people first began trading was because of their desires for objects other societies possessed. In the activity, classes discuss why exploration has been a common thread in all societies and where these desires have taken...