Roger Freedman

So apparently the woman shot in Chicago, Marimar Martinez, never rammed into an ICE vehicle or pointed gun at ICE.

Her lawyer says he has body cam footage of the attack. What really happened is that her and others were following ICE, then an ICE agent rammed into Martinez's car & shot her 7 times.😥

C. E. Wieman (2014) doi: 10.1073/pnas.1407304111
E. J. Theobald (2020) doi: 10.1073/pnas.1916903117
2/2

Thanks, Ted! One approach that the cheese-paring administrators might go for is to state that the discussions will be used for active learning exercises, which are known to improve both student performance and student retention. S. Freeman et al (2014) doi: 10.1073/pnas.1319030111 1/2

Tears of some sort, undoubtedly! 😉

I very much agree with their conclusion that “taking a high school physics course has a modestly positive relationship with the grade earned in introductory college physics.” I find the students who took such a course are at a slight advantage until about week 4 - but not after that.

Thanks, Marta! That may help explain why so many first-year college students have no idea how to use a STEM textbook. Through no fault of their HS teachers or of their own, they may never have had to.

Is it your sense that most HS physics teachers have decided to create all their curricular materials from scratch, as you so commendably have done, and that they do not recommend existing textbooks (even free ones) to those students who ask for additional references?

A warning for those in Mike Collins' (R-GA) district:

Detail of a fourteenth century image showing Henry of Germany delivering a lecture to University Students in Bologna by Laurentius de Voltolina in the Liber ethicorum des Henricus de Alemannia, preserved in the Kupferstichkabinett SMPK, Staatliche Museen, Pressiischer Kulturbesitz, Min. 1233

For these students, education seems to have reverted to the 14th century, with only the lecturer having a copy of the precious book…

And yet these students say that their teachers are not even suggesting any textbooks as secondary sources.

Thanks, Brian! Id love to hear from current AP teachers as well.

Title page of OoenStax “Physics High School”

And there is indeed an OpenStax high school physics textbook: openstax.org/details/book...

The comments I see are from students taking AP physics, for which the OpenStax college physics book should be appropriate. That this is not even suggested to these students baffles me.

Hopefully the whole Bari Weiss thing and Ezra Klein thing starts waking people up to the fact that corporate media is mostly populated with mediocre people who have made millions and gained unbelievable influence because they threaten nothing and tell wealthy people exactly what they want to hear.

Thanks! I wasn’t sure whether your goal was to institute or retain them. What is your vision for the sections?

Arfken was the textbook fit my undergraduate math methods course.

#ITeachPhysics

Is this the norm for high school physics? Why are there no required or recommended textbooks, even the ones freely available online? Any insights would be greatly appreciated! 2/2

A question for U.S. high school physics teachers: in looking at posts on Reddit from HS physics students, a typical statement is “Our school doesn't use any textbooks and none were recommended by our teacher. They send slides/files, but only after they’ve finished the whole topic.” 1/2 🎢

(I ask because I have seen dramatic differences between the character of discussion sections from one institution to another.)

How are the lectures and discussion sections structured at your university? In particular, what is done in the discussions that is not done is lecture?

"In Example 3.10, suppose the tranquilizer dart has a relatively low muzzle velocity so that the dart reaches a maximum height at a point P before striking the monkey, as shown in the figure. When the dart is at point P, will the monkey be at point A (higher than P), at point B (at the same height as P), or at point C (lower than P)? Ignore air resistance."

I always like following up the discussion of this problem with a multiple-choice question...

YouTube video by Clips From the Past Universal Newsreel 1957-10-07 New Moon. Reds Launch First Space Satellite

Here’s a contemporary newsreel… youtu.be/mN9VFKasTDA

I believe that orbit was actually chosen to provide better data on the density of the atmosphere at that altitude! (Sounding rockets had indeed reached that altitude before, but only for a brief amount of time.) In any event the onboard batteries gave out on October 26.

The conservative movement runs on nothing but ginned up outrage bait that has a half-life of exactly one week

The low point of its elliptical orbit was at such a low altitude - just 215 km (134 mi) - that it experienced substantial air drag from the upper atmosphere, and Sputnik 1 fell out of orbit and burned up on January 4, 1958, after only 92 days in orbit.

Front page of the New York Times for October 5, 1957, with the headline SOVIET FIRES EARTH SATELLITE INTO SPACE IT IS CIRCLING THE GLOBE AT 18,000 M. P. H. SPHERE TRACKED IN 4 CROSSINGS OVER U.S.

On October 4, 1957 the first Earth satellite, Sputnik 1, was placed in orbit and the Space Age began - as did the space race between the USSR and USA. #space #spaceage #spacerace #sputnik #sputnik1

CDC data interrupted, so we went state by state A look at Covid-19, flu and RSV trends in each state

The title says it all. Don't try to get between scientists and their data.

Data interrupted, so we went state by state open.substack.com/pub/caitlinr...

Macron remarks are notable- some quotes: "We have been incredibly naive in entrusting our democratic space to social networks that are controlled either by large American entrepreneurs or large Chinese companies, whose interests are not at all the survival or proper functioning of our democracies."

One thing that comes through awfully clearly in these ICE videos is how many of these goons gravitated toward the job because being able to assault people with impunity is a big thrill for them.