08 June 2023

Breaking news: AP Physics updates, to take effect with the 2025 exam

The universe now has clarity about forthcoming changes to all four AP Physics exams.  I'm thoroughly impressed with the work being done by the College Board team and the development committees.  Here's what you need to know!

The changes I describe below will take effect with the 2025 exams.  The 2024 exams will be identical in form and content to those since 2015.

Let's start with content changes:

Physics 1 will now include fluids - just teach the current P2 fluids unit, or old Physics B material.  That's the major change.  Minor additions include the parallel axis theorem, the center-of-mass formula, and quantitative understanding of elliptical orbits.

Physics 2 will add in sound, specific heart, blackbody radiation, and a non-quantitative treatment of transient behavior in RC circuits.  Physics 2 removes special relativity and quantum wave functions (keeping E=mc^2).

Neither Physics C course will change its content significantly.  The new Course and Exam Description will include explicit references to some topics such as physical pendula which have been tested before but not named in old CEDs.

Now, what about the exam format changes?  These are rather significant.  The College Board representatives emphasize, as do I, that the style of questions on each exam are not changing much at all.  The format changes are for the purpose of clarity of expectation.  The CB wants students to know what sorts of questions to expect on each exam, such that they can worry less about reading directions and instead show their physics knowledge.  The CB further wants to be able to better differentiate the level of the 1/2 exams from the C exams.  A consistent format makes it easier to separate the skills of "being a good physicist" and "being a good test taker".

So there's no need to throw out the questions you've been using on your classroom tests!  You can cut out parts or add parts... but everything that's been given since 2015, and everything you can find on AP classroom as aligned to the exam, is still perfectly useful.

All four AP Physics exams will have the same format.  That format includes 50 multiple choice questions, each with four choices and a single correct answer; and 4 FRQs.  The timing will be 90 minutes for multiple choice, followed by 90 minutes of free response.  The equation sheets for all exams will be aligned.

The four free response questions on all exams will follow the same order and point distribution:

1. Mathematical Routines, 10 points.  This will include calculations and derivations; on the 1/2 exams especially there will likely be a part requiring multi-step verbal reasoning as well.

2. Translating Between Representations, 12 points.  Physics concepts can be communicated in many ways beyond merely equations and words.  This question will test students' ability to understand more than just one of these communication methods.

3. Experimental Design and Analysis, 10 points.  This will be very similar to the current questions on all exams that are posed in a laboratory setting.  It will likely include data collection techniques, even on the C exams.

4. Qualitative/Quantitative Translation, 8 points.  This is a shorter version of the style of question that has been on the 1/2 exams since 2015.  Fewer points allows the question to get straight to the point - describe a situation verbally, describe a situation with equations, and then show how the equations relate to the words.

That's all.  These changes are all made with the idea of transparency - if students knows exactly what to expect on the exam, then they can focus on showing their physics knowledge in each situation which is presented to them.

The College Board will be releasing three all-new practice tests in each course for teachers - they'll be available in 2024 after you pass the course audit.  Therefore, I'd recommend that you read these, and then cut and paste into the classroom tests that you're already using. 

The other exciting news, especially for P1 teachers, is that a new standard setting will happen for the 2025 exams.  That means a new set of comparisons between AP students and college students taking a similar exam.  And, that means re-evaluated cut scores to earn 5, 4, 3, etc.  The hope and likelihood is that more P1 students will be qualified for higher scores.  But stay tuned.  


9 comments:

  1. Thank you for the update. A few questions:

    1. Are we still going to see the language, "In a clear, coherent paragraph..." ?
    2. "Quantitative analysis of elliptical orbits..." I'm hoping this is primarily converting between gravitational potential energy and kinetic energy in an orbit?
    3. "Quantum wave functions" are you referring just to the psi graph question, or to the standing wave Bohr model of electron orbitals, or both?

    Thanks!

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  2. And, Will, a few answers! :-)

    1. The "clear, coherent paragraph" language should vanish. There will be questions on the P1 and P2 exams that require multiple-step verbal reasoning, but no longer with the formal requirement for a paragraph-length response.

    2. I think that's fair. But I do see in the draft CED that escape speed will be a relevant concept in P1, where previously this was limited to the C-mechanics exam.

    3. The Bohr model is part of the draft CED for P2. The quantum wavefunction (psi) and its probabilistic meaning is not.

    Hope that helps!

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    Replies
    1. Thanks, and yes, that helps immensely. Escape speed isn't so bad, because it's derived with energy calculations anyway. As for the paragraph, it's academic at this point, but the one thing I'd done that got decent results with that thing was to give one consistent grading rubric for every paragraph on a test--it was always 5 points, 2 of which were for identifying (with justification) the major principles involved in the problem, 2 of which were for applying those principles, and 1 of which was for "getting the right answer." How that played out depended on the question, but it got them used to one generic format that, if you squint, was close enough to what was on the exams.

      Bonus: having one consistent grading rubric greatly helped the students for whom English isn't their home/first language. I have a hunch that the paragraph question has been generally very tough for people trying to navigate both English and physics at the same time. So even though I kind of found a way to work with it, I can't say I'll be sorry to see it go.

      Cheers.

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  3. Sorry, one more question. So does this mean fluids are still *on* the AP2 exam next year? I'd been under the impression there was going to be a year where they cut fluids from AP2 but didn't have it in AP1 just yet.

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  4. Yes - fluids are still on AP2 for the 2024 exam. No changes until 2025!

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  5. Hi Greg, this is news to me and I don't think my district knows about this yet. As of now they are still planning on updating the curriculum and I want to let me know about this update before they make those changes. I can't seem to find anything online when I google this, is there a way for you to send me the link to college board's post about this? Thanks in advance!

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  6. Taylor, my understanding is that the official posting should be imminent - like, within the week, perhaps. That said, the College Board is very, very careful to have their messaging perfect before they send things out. So delays are to be expected.

    That said... I'm not sure about your concern. Is your district trying to update the AP Physics 1 course for the 2023-24 school year, even though the changes don't happen until 2024-25? If so, I'd tell them about this, but don't worry. What is written in a district's course description has no relevance, really. You know what to teach, just teach the way you know is correct. :-)

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  7. Do you know if there will be a recommended amount of minutes per week of instruction after the changes take place? I'm asking since they are adding material to AP1, but not removing anything.

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  8. No idea, Louie. AP1 already removed three units in 2020 from the original course: electrostatics, circuits, and waves. Adding fluids doesn't even come close to bringing the course back to its original breadth. I don't think it's quite accurate to claim that material is added without removing anything. The subtraction and addition has simply been asynchronous. :-)

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