A paper that we've been working on for quite a while just got published! Check it out our if you're into #physicsed and #measurement #psychometrics
"Is the Force Concept Inventory biased across the intersections of gender and race?"
https://www.researchgate.net/publication/390567150_Is_the_Force_Concept_Inventory_biased_across_the_intersections_of_gender_and_race
Let me try a little physics riddle here on Mastodon. This riddle is really meant as a moment of self-reflection for physics teachers (in particular I invite you to compare what answers you'd give within Relativity Theory)
We're in the context of Newtonian mechanics.
There are three small bodies. In the inertial coordinate system (t, x, y, z), we know the following about the three bodies (at a given instant of time):
- The first has mass 3 kg
- The second has velocity (1, 0, 0) m/s
- The third has momentum (2, 0, 0) kg⋅m/s
Now consider a new coordinate system (t', x', y', z') related to the first by a Galileian boost:
t' = t, x' = x – u⋅t, y' = y, z' = z
with u = 1 m/s
Questions:
- What is the mass of the first body in the new coordinate system?
- What is the velocity of the second body in the new coordinate system?
- What is the momentum of the third body in the new coordinate system?
Can you give definite answers to these three questions, and *motivate your answers with simple physical principles*? Note that by "definite answer" I don't necessarily mean an answer with a definite numerical value.
#physics #physicseducation #physicsed #science #scienceeducation #mechanics
Why was I never taught this? It makes beginning physics make so much sense and makes geometeric interpertations for what our math is doing so much easier. My third eye has been opened. https://mattferraro.dev/posts/geometric-algebra
#physics #physicsed #physics101 #holyshit #math #mathematics #geometrics
@mhayesgolding @edutooters For designing learning in a classroom (aka, #teaching), say a college-level math course, there is the MAA Instructional Practices Guide:
https://maa.org/programs-and-communities/curriculum%20resources/instructional-practices-guide
For #PhysicsEd, the Physport site: https://www.physport.org/
Metaphors & principles are useful for #LearningDesign, like "If Math Is The Aspirin, Then How Do You Create The Headache?"https://danmeyer.substack.com/p/if-math-is-the-aspirin-then-how-do
Some newer stuff: affective context model https://youtu.be/9lR1Fwqt0G8?feature=shared & #DesignJustice https://er.educause.edu/articles/2020/10/inclusive-design-and-design-justice-strategies-to-shape-our-classes-and-communities
New video: vertical Atwood machine with general masses i.e., symbolic solution for acceleration and tension. #iteachphysics #physicsed #atwoodmachine #mechanics #newtonslaws https://www.youtube.com/watch?v=50AFWE5mZ_I
Just discovered that Wolfram Alpha does stars.
https://www.wolframalpha.com/input?i=Sirius
#ITeachPhysics #STEMeducation #PhysicsEd #AstroPhysics #Astronomy #AstroEdu #WolframAlpha
#AstronomyTools #TeachAstronomy #AstroEducators #HighSchoolAstronomy #UniversityAstronomy #AstronomyResources #AstronomySoftware #PhysicsTeachers
"Swing the mighty hammer of physical integration" new video on electric potential by integrating over the charge distribution! #physics #iteachphysics #electricpotential #integration #physicsed https://www.youtube.com/watch?v=VPF6kPRKfFc
Footage from the "2D gas simulator" I built in 2018 for a student research project. I really needed more energy to get higher frequency of collisions etc., but the velocity components came out pretty close to normal. #iteachphysics #physicsed #idealgases #statmech #physicslab
New video on electric potential energy and applications to uniform and point charge fields tonight. https://www.youtube.com/watch?v=W6LDP7JvhbE #physics #physicsed #iteachphysics #potentialenergy #electrostatics #calcphysics
