Students study a research telescope to obtain quantitative information about these objects. They use the SkyServer Navigation Tool to identify objects and record celestial coordinates. In addition, they associate star brightness and...

Basically, this is an interactive exploration of educational astronomy software and an app. Young astronomers discover how the apparent motion of the sky relates to Earth's movements and the position of the observer. It is out of this...

Students examine what Eratosthenes is and the history behind him.  In this earth lesson students complete a hands on activity to repeat Eratosthenes' experiment.