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.
Birds are light creatures that fly. Most planes wings are built in the shape of something called a airfoil similar to a bird's wing. As the wing moves forwards its curved shape makes the air above faster than the air below which makes it fly!
This indicates how strong in your memory this concept is