Sixth graders explore agriculture by examining world geography. In this pecan cultivation lesson, 6th graders identify the history of the famous nut and the impact it has on the U.S. economy, diet and human body. Students define...

Children, based on a set of criteria, evaluate the quality of pecans. They research recorded history of pecan trees as well as how their seeds moved across western Missouri into southeastern Kansas, Oklahoma, Texas and Mexico. In...

Students explain the cause of and effects of fluid shift in a microgravity environment. Students identify the effects of microgravity during long duration space flight. Students describe research on cardiovascular effects in microgravity...