### ENHANCEMENT OF JUNIOR HIGH SCHOOL STUDENTS CONCEPT COMPREHENSION IN HYDROSTATIC PRESSURE AND ARCHIMEDES LAW CONCEPTS BY PREDICT-OBSERVE-EXPLAIN STRATEGY

#### Abstract

*P*most all students interpreted

_{h}= P_{0}+ ?gh,*h*as the depth measured from the bottom of the liquid column (not from the surface of the liquid as it should be), (b) related to buoyant force, the problem depended on the context where the question given. In context of immovable objects in a certain fluid, almost all student was hard comparing buoyant force magnitude to the weight. In context of sliding object in liquid, almost all students failed to explain the object position to its buoyant force.

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