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Students Misconceptions About Gravity
Transcript of Students Misconceptions About Gravity
Misconceptions Found in the Literature
• Gravity is proportional to the height of an object,
• If the air pressure changes the object must change
• There is no gravity outside of Earth
• Gravity does not affect objects in water.
• Gravity under water will make you drown if you are not swimming .
• Objects float because they’re weightless.
• The Earth has an edge, but you cannot fall off of it because of gravity.
• The Earth doesn’t have an edge, but if it did and if you fell off of it, you would fall “into space” or into “the universe”.
• There is no gravitational force acting on an object that is free falling.
Conclusion: Changing Misconceptions
Four conditions for conceptual change:
Students must be dissatisfied with their existing conceptions.
Present students with phenomena that does not prove to be explainable by the students’ reasoning, creating a conflict in the students’ minds and causing them to either choose a concept which has been proven “wrong”, or an inadequate explanation, or choose one that has been proven “correct” or a better explanation.
The second, third, and fourth conditions are that students should be presented a new conception that is seen, by them, as “intelligible”, “plausible”, and “fruitful”.
"...the ideas that are taught in classrooms are transferred to students, but there is still a disconnect between the idea the teacher thought he/she was delivering and the newly formed idea in the student’s mind."