BasicStudents matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient)Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
AdvancedStudents matched to this level are ready for material that requires superior performance and mastery.
Earth behaves like a magnet because the molten iron core of Earth interacts with the movement of electrons on the surface of the planet. Use a compass to determine the direction of the north and south magnetic poles with information from a math and science teacher in this free video science lesson.
Courtesy of ehowgreen
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