What happens to stars as they get older? A simulation takes pupils through the life cycle of stars based on their masses. The resource introduces the Hertzsprung-Russell diagram and the common relationships and life cycle patterns observed.

Students explore the characteristics of stars. In this space science activity, students use the Microsoft WorldWide Telescope program to identify the properties of stars and identify the stars in the galaxy.

Students describe how wedge and lever makes work easier. In this physics lesson plan, students analyze experimental data by creating a graph to see the trends. They calculate the work done and mechanical advantage of these simple machines.