Why Do Rivers Curve? is a short video produced by Minute Earth. The video explains and demonstrates the role of erosion in forming the bends in a river until an oxbow lake is formed. The video concludes with a challenge to use Google Earth to locate an oxbox lake. The video is embedded below.
Shape It Up is a good companion activity to Why Do Rivers Curve? Shape It Up is one of many good educational games and activities on Kinetic City. The activity presents students with "before" and "after" images of a piece of Earth. Students then have to select the force nature and the span of time it took to create the "after" picture. If students choose incorrectly, Shape It Up will tell them that they were wrong and give them a chance to choose again.