Curated OER
Cosmic Bar Graphs
In this cosmic bar graph worksheet, students solve 2 problems using given bar graphs that plot the number of galaxies vs. the galaxy type and the number of gamma-ray bursts vs. the burst classification. Students find the fraction of...
Curated OER
Collisions Lesson
Tenth graders explore the role that collisions and near collisions of galaxies play in determining the shape of galaxies. They model the collision of disk shaped and spherically shaped galaxies.
Curated OER
How Many Stars in the Milky Way?
Students perform an experiment in which they will use a statistical method called `sampling' to count to a billion (and beyond). Students practice sampling by estimating the number of characters on a page from the classified section of a...
Curated OER
Stars and Slopes
Students use the slopes of various curves plotted on log-log graph paper to classify stellar objects as binary stars, supernovae, or active galaxies.The data used in this instructional activity were obtained from X-ray astronomy satellites.