In this PowerPoint file students learn how to convert kilometers into Astronomical Units and vice versa,
There are 5 practice problems in the PowerPoint (with answers) and then a worksheet with 20 classwork/homework problems.
There is also a .mp4 podcast included that will walk students through a homework assignment that you can upload to your class website if you have one. No excuse for a student not being able to do homework now.
If you do not have Microsoft PowerPoint you can download OpenOffice from OpenOffice.org for free or open the file in Google Docs.