Bree Barnett Dreyfuss
@barnettdreyfuss.bsky.social
(she/her/hers) AP/Physics teacher in CA, Ambassador Program Coordinator @STEPUPphysics, @NCNAAPT Prez, Alum of @TeacherInstitut @Exploratorium, #iteachphysics
Reposted by Bree Barnett Dreyfuss
Poster presentation submissions are being accepted for #AAPTWM26. The submission deadline is November 14th. ow.ly/kXao50X0aF5 #AAPTConference #AAPTMeeting #ITeachPhysics #PhysicsEducation #PhysicsTeachers
November 5, 2025 at 6:49 PM
Poster presentation submissions are being accepted for #AAPTWM26. The submission deadline is November 14th. ow.ly/kXao50X0aF5 #AAPTConference #AAPTMeeting #ITeachPhysics #PhysicsEducation #PhysicsTeachers
I write a lot of letters of rec for students that were juniors in my AP Physics class. So far, 28 students with 35 letters submitted, 6 to go by 11/1, 4 at a later date. There will be just as many current juniors asking for summer program letters.
Necessary but exhausting process full of privilege.
Necessary but exhausting process full of privilege.
October 25, 2025 at 5:13 PM
I write a lot of letters of rec for students that were juniors in my AP Physics class. So far, 28 students with 35 letters submitted, 6 to go by 11/1, 4 at a later date. There will be just as many current juniors asking for summer program letters.
Necessary but exhausting process full of privilege.
Necessary but exhausting process full of privilege.
Reposted by Bree Barnett Dreyfuss
Join us for the next AAPT Virtual Coffee Hour on "An Evening with Paul Hewitt" with presenters Paul Hewitt and John Suchocki, Conceptual Academy on November 18 at 7:30 pm EST. This event is open to the public. ow.ly/fJfn50XbSZy #AAPTCoffeeHour #PhysicsEducation #ITeachPhysics
October 22, 2025 at 2:06 PM
Join us for the next AAPT Virtual Coffee Hour on "An Evening with Paul Hewitt" with presenters Paul Hewitt and John Suchocki, Conceptual Academy on November 18 at 7:30 pm EST. This event is open to the public. ow.ly/fJfn50XbSZy #AAPTCoffeeHour #PhysicsEducation #ITeachPhysics
🧪🎢Each year I do a pumpkin bungee drop in AP C Mech. Groups are randomly given a spring length? Spring constant, Pumpkin height and mass. They have to determine if it smashes or not and find either max speed if it survives or impact speed. I want to add graph sketching this year. Ideas so far: 1/2
October 20, 2025 at 12:50 AM
🧪🎢Each year I do a pumpkin bungee drop in AP C Mech. Groups are randomly given a spring length? Spring constant, Pumpkin height and mass. They have to determine if it smashes or not and find either max speed if it survives or impact speed. I want to add graph sketching this year. Ideas so far: 1/2
Reposted by Bree Barnett Dreyfuss
Register for #AAPTWM26 and take advantage of Early Bird registration rates! Early Bird rates end after November 14th. ow.ly/32Qt50X1LRM #AAPTConference #AAPTMeeting #ITeachPhysics
October 15, 2025 at 1:22 PM
Register for #AAPTWM26 and take advantage of Early Bird registration rates! Early Bird rates end after November 14th. ow.ly/32Qt50X1LRM #AAPTConference #AAPTMeeting #ITeachPhysics
Reposted by Bree Barnett Dreyfuss
Join us for the next AAPT Virtual Coffee Hour on "An Evening with Paul Hewitt" with presenters Paul Hewitt and John Suchocki, Conceptual Academy on November 18 at 7:30 pm EST. This event is open to the public. ow.ly/E25v50XbSZA #AAPTCoffeeHour #PhysicsEducation #ITeachPhysics
October 15, 2025 at 7:52 PM
Join us for the next AAPT Virtual Coffee Hour on "An Evening with Paul Hewitt" with presenters Paul Hewitt and John Suchocki, Conceptual Academy on November 18 at 7:30 pm EST. This event is open to the public. ow.ly/E25v50XbSZA #AAPTCoffeeHour #PhysicsEducation #ITeachPhysics
Targeted advertising showed me an ad for a Chemistry Advent Calendar with cute ornaments each day. I am disappointed but not surprised there wasn't a Physics one.
What would you put in such a countdown type calendar for Physics?
I'm thinking small toy car, flying pig, tennis ball, rocket, etc.🎢🧪
What would you put in such a countdown type calendar for Physics?
I'm thinking small toy car, flying pig, tennis ball, rocket, etc.🎢🧪
October 12, 2025 at 8:47 PM
Targeted advertising showed me an ad for a Chemistry Advent Calendar with cute ornaments each day. I am disappointed but not surprised there wasn't a Physics one.
What would you put in such a countdown type calendar for Physics?
I'm thinking small toy car, flying pig, tennis ball, rocket, etc.🎢🧪
What would you put in such a countdown type calendar for Physics?
I'm thinking small toy car, flying pig, tennis ball, rocket, etc.🎢🧪
#Teach180 blog post about how questions can grow into activities that can keep growing & getting better. This activity on positive/negative work started as a warm-up question but is now a nearly full day activity I added to again for next year. 🎢🧪
breebarnettdreyfuss.blogspot.com/2025/10/grow...
breebarnettdreyfuss.blogspot.com/2025/10/grow...
Growing Activities by Accident
One of the interesting things about teaching long term is seeing how your activities, labs, tests, et. all grow over time. You learn new st...
breebarnettdreyfuss.blogspot.com
October 8, 2025 at 1:14 PM
#Teach180 blog post about how questions can grow into activities that can keep growing & getting better. This activity on positive/negative work started as a warm-up question but is now a nearly full day activity I added to again for next year. 🎢🧪
breebarnettdreyfuss.blogspot.com/2025/10/grow...
breebarnettdreyfuss.blogspot.com/2025/10/grow...
#Teach180 blog post explaining my day 1 Newton's Laws explorations, except we don't call it that yet.
✅️tennis balls
✅️bowling balls
✅️rubber mallet
🎢🧪
breebarnettdreyfuss.blogspot.com/2025/10/intr...
✅️tennis balls
✅️bowling balls
✅️rubber mallet
🎢🧪
breebarnettdreyfuss.blogspot.com/2025/10/intr...
Intro to Forces activities
A few years ago I changed the order of activities and my introduction notes for Newton's Laws in my college prep physics class and it has b...
breebarnettdreyfuss.blogspot.com
October 7, 2025 at 1:30 PM
#Teach180 blog post explaining my day 1 Newton's Laws explorations, except we don't call it that yet.
✅️tennis balls
✅️bowling balls
✅️rubber mallet
🎢🧪
breebarnettdreyfuss.blogspot.com/2025/10/intr...
✅️tennis balls
✅️bowling balls
✅️rubber mallet
🎢🧪
breebarnettdreyfuss.blogspot.com/2025/10/intr...
Vital piece of physics equipment for AP Physics to learn about forms on an object in UCM on a banked turn. 🎢🧪
September 30, 2025 at 2:40 PM
Vital piece of physics equipment for AP Physics to learn about forms on an object in UCM on a banked turn. 🎢🧪
Excited to see my @ncnaapt.bsky.social friends in about a month! 🧪🎢
September 29, 2025 at 4:23 PM
Excited to see my @ncnaapt.bsky.social friends in about a month! 🧪🎢
Reposted by Bree Barnett Dreyfuss
Poster submissions are being accepted for #AAPTWM26. The submission deadline is November 3rd. ow.ly/kXao50X0aF5 #AAPTConference #AAPTMeeting #ITeachPhysics #PhysicsEducation #PhysicsTeachers
September 29, 2025 at 2:37 PM
Poster submissions are being accepted for #AAPTWM26. The submission deadline is November 3rd. ow.ly/kXao50X0aF5 #AAPTConference #AAPTMeeting #ITeachPhysics #PhysicsEducation #PhysicsTeachers
Fabulous discussion of friction, just shared with my AP C kids and hope they have time to watch it before they start their forces test today! 🧪🎢
NEW VIDEO!
Demonstrating the Direction of the Force of Friction
youtu.be/SFP2rgdhI30
#Friction #Sliding #Direction #stem #iTeachPhysics
Demonstrating the Direction of the Force of Friction
youtu.be/SFP2rgdhI30
#Friction #Sliding #Direction #stem #iTeachPhysics
Demonstrating the Direction of the Force of Friction
YouTube video by Flipping Physics
youtu.be
September 22, 2025 at 3:16 PM
Fabulous discussion of friction, just shared with my AP C kids and hope they have time to watch it before they start their forces test today! 🧪🎢
Forgot to share the Bear Bosun Chair I made last week. I had rushed something last year and always meant to redo it. When AP C students did the '86 FRQ about it, I made this. Simple wood frame as the bear "seat," rubber bands to hold it, eye hooks and wire at the top, binder clip at hands. 🧪🎢
September 22, 2025 at 3:05 PM
Forgot to share the Bear Bosun Chair I made last week. I had rushed something last year and always meant to redo it. When AP C students did the '86 FRQ about it, I made this. Simple wood frame as the bear "seat," rubber bands to hold it, eye hooks and wire at the top, binder clip at hands. 🧪🎢
@fnoschese.bsky.social do you know how to show students if their @desmos.com card sorts match the key? I feel like I've seen that on a card sort before but don't know how.
September 14, 2025 at 1:08 AM
@fnoschese.bsky.social do you know how to show students if their @desmos.com card sorts match the key? I feel like I've seen that on a card sort before but don't know how.
Reposted by Bree Barnett Dreyfuss
Days 15 and 16 of #teach180: It's OK to have boring days, and we can learn a lot on those days. lerner180.posthaven.com/days-15-and-... #iteachphysics
Days 15 and 16: Getting Back the Test and Whiteboarding the Mechanical Wave Model
Yesterday was the test, and today, I passed back the test. I didn't write a blog yesterday, because I sat there writing an answer key for the test, organizing my desk, working on orders for the...
lerner180.posthaven.com
September 10, 2025 at 10:45 PM
Days 15 and 16 of #teach180: It's OK to have boring days, and we can learn a lot on those days. lerner180.posthaven.com/days-15-and-... #iteachphysics
#teach180 blog post about the "salami problem" I do in AP C about equilibrium & forces. It's built up as a big memorable demo. I have done this same type of problem, based on a Hewitt Drew-it, in our college prep Physics as well, sans salami. 🎢🧪
breebarnettdreyfuss.blogspot.com/2025/09/sala...
breebarnettdreyfuss.blogspot.com/2025/09/sala...
Salami Forces
There is a problem in my 10th edition of Halliday, Resnick & Walker that asks students to determine the force read by the spring scale in th...
breebarnettdreyfuss.blogspot.com
September 7, 2025 at 6:39 PM
#teach180 blog post about the "salami problem" I do in AP C about equilibrium & forces. It's built up as a big memorable demo. I have done this same type of problem, based on a Hewitt Drew-it, in our college prep Physics as well, sans salami. 🎢🧪
breebarnettdreyfuss.blogspot.com/2025/09/sala...
breebarnettdreyfuss.blogspot.com/2025/09/sala...
Reposted by Bree Barnett Dreyfuss
Join us for an AAPT Virtual Coffee Hour on "Teaching Physics for the First Time" with presenter Jan Mader, AAPT/PTRA on September 23rd at 7:30 pm ET. This event is open to the public. ow.ly/F92O50WJRbU #AAPTCoffeeHour #PhysicsEducation #ITeachPhysics
September 4, 2025 at 1:46 PM
Join us for an AAPT Virtual Coffee Hour on "Teaching Physics for the First Time" with presenter Jan Mader, AAPT/PTRA on September 23rd at 7:30 pm ET. This event is open to the public. ow.ly/F92O50WJRbU #AAPTCoffeeHour #PhysicsEducation #ITeachPhysics
#Teach180 blog post about the brick, balloon and block student experiment I do to illustrate changes in contact forces. Its based on Darek Dewey's set-up:
breebarnettdreyfuss.blogspot.com/2025/09/bloc...
breebarnettdreyfuss.blogspot.com/2025/09/bloc...
Block, Balloon, Brick
I was inspired by this Darek Dewy Twitter/X post he used to demonstrate the contact forces between two boxes using a balloon. He labeled o...
breebarnettdreyfuss.blogspot.com
September 5, 2025 at 3:11 PM
#Teach180 blog post about the brick, balloon and block student experiment I do to illustrate changes in contact forces. Its based on Darek Dewey's set-up:
breebarnettdreyfuss.blogspot.com/2025/09/bloc...
breebarnettdreyfuss.blogspot.com/2025/09/bloc...
I want students to collect data of accelerating motion (not just constant/ave v). I want them to use equations to calculate other values and model the motion with graphs. I'm thinking driving because walking/running won't give final v. No tracking motion software. Anyone done a project like this?🧪🎢
August 31, 2025 at 10:04 PM
I want students to collect data of accelerating motion (not just constant/ave v). I want them to use equations to calculate other values and model the motion with graphs. I'm thinking driving because walking/running won't give final v. No tracking motion software. Anyone done a project like this?🧪🎢
#Teach180 blog post explaining the two Speed shifters lab:
breebarnettdreyfuss.blogspot.com/2025/08/two-...
🧪🎢
breebarnettdreyfuss.blogspot.com/2025/08/two-...
🧪🎢
Two Speed Shifters
When I started teaching, the veteran physics teacher had these cars for a particular lab he called "two speed shifters." They are wind up c...
breebarnettdreyfuss.blogspot.com
August 31, 2025 at 1:00 AM
#Teach180 blog post explaining the two Speed shifters lab:
breebarnettdreyfuss.blogspot.com/2025/08/two-...
🧪🎢
breebarnettdreyfuss.blogspot.com/2025/08/two-...
🧪🎢
Reposted by Bree Barnett Dreyfuss
The 2025 High School Physics Photo Contest Top 100 entries were displayed and judged during the 2025 Summer Meeting in Washington, DC. See the Top 100 photos & Top Finishers here ➡ ow.ly/wMVO50WOh08 #PhysicsEducation #PhysicsTeachers #HSPhotoContest2025 #ITeachPhysics #AAPTSM25
August 29, 2025 at 5:01 PM
The 2025 High School Physics Photo Contest Top 100 entries were displayed and judged during the 2025 Summer Meeting in Washington, DC. See the Top 100 photos & Top Finishers here ➡ ow.ly/wMVO50WOh08 #PhysicsEducation #PhysicsTeachers #HSPhotoContest2025 #ITeachPhysics #AAPTSM25
@rogerfreedman.bsky.social your epic online posts made it to our Physics Club flyers.
August 28, 2025 at 2:20 PM
@rogerfreedman.bsky.social your epic online posts made it to our Physics Club flyers.
Reposted by Bree Barnett Dreyfuss
AAPT Members: Are you taking advantage of your 25 free article downloads per year from any AIP Publishing articles? Simply sign in with your Scitation username and password, and start downloading today! pubs.aip.org/aip #aaptmemberbenefits #ITeachPhysics #PhysicsEducation
August 27, 2025 at 8:53 PM
AAPT Members: Are you taking advantage of your 25 free article downloads per year from any AIP Publishing articles? Simply sign in with your Scitation username and password, and start downloading today! pubs.aip.org/aip #aaptmemberbenefits #ITeachPhysics #PhysicsEducation
Did NOT need an unscheduled evacuation with no information as to WHY, TODAY. 😤
August 27, 2025 at 10:38 PM
Did NOT need an unscheduled evacuation with no information as to WHY, TODAY. 😤