But 101 remains the basis of everything that comes after. Newtonian physics remains the bedrock of physics despite the existence of relativity and quantum physics.
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But that's the thing. Newtonian physics reasonably describes 99.9% of what we encounter in our day to day lives. It's taught first because covers the broadest cases.
BUT, it doesn't cover the exceptions, or the deeper theory.
Technically, even throwing a baseball or driving a car involves relativity. It's just that the effects are so vanishingly small that we can ignore them. That doesn't mean they aren't there. And it doesn't mean we don't have to take them into account in situations where they have a larger effect.
No! It's not the bedrock at all. The deeper theories are quantum field theory and general relativity. Newtonian physics is just a good approximation to those, sometimes.
Right, the point of a 101 course is to get you a basic grounding in the subject so all your more advanced courses can fill in all the missing gaps and over simplifications that the 101 course didn't explain because you don't grasp enough of the subject to get those gaps filled in a 101 course
it’s an intro, not the bedrock. a simpler model. easier for students. a great deal of what comes after concerns exceptions and inaccuracies. same is true of biology. simple models, like binary karyotypes, karyotype determining phenotype, give way to more complex and accurate models.
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BUT, it doesn't cover the exceptions, or the deeper theory.
Inasmuch as a "bedrock" exists, it's probably Noether's Theorem.
Newtonian physics is an oversimplification for high schoolers.
"God. Glory. Gold." Is a good explanation of Spanish colonial motivation for 8th graders - not for college students.
Teaching XY = male is fine in 8th grade. Teaching about the effects of androgens on the fetus in later courses provides contradictory examples.