Saturday, November 22, 2014

AP Physics Video Project










This weekend I am visiting the Physics Department at Davidson College in North Carolina. I have designed a unit about thermodynamics with a focus on ideal gases, and I am shooting videos to accompany the unit. 

This unit will help students learn with the newly redesigned AP Physics programs that started this year. 

The videos include a Boyle's Law demo and how to draw and understand a pressure/volume diagram.

And I even found some historical physics equipment!


Sunday, November 2, 2014

Making Graphs: The Jackalope Story




This video tells a funny story while teaching students about making graphs and exhibits how to graph distance.

 I like it because it helps students understand that graphs are not just numbers and lines--they must be interpreted and then they tell a story with the data. 




Thursday, October 23, 2014

SCAAPT Fall Meeting on Nov 8

The Fall meeting of the Southern California Chapter of the American Association of Physics Teachers will take place at the University of Southern California on November 8, 2014.

  


Below, I will highlight some of the exciting presentations. The program includes three talks about the Next Generation Science Standards.

The morning workshop requires an RSVP:

8:15: Morning Workshop - Mark Hughes,
"Modeling Physics" 

Modeling Physics is a research based and internationally renowned pedagogical method of physics instruction that is aligned with CCSS and NGSS. Qualified and experienced instructors are well versed in all aspects of instruction and are available for staff in-service.





9:25: Contributed talk: Roberto Lopez, USC,
“USC Rocket Propulsion Laboratory”

The USC Rocket Propulsion Laboratory is a student run design team building the most advanced rockets any university has created. Our current goal is to fly our rocket, Traveler, past the Von Karman line making us the first university lab to do so.

9:40: Invited Talk: Chris Lowe, Shark Expert, CSU Long Beach, "Physics for Fishers”

What does physics have to do with overfishing? For many fishes, an understanding of mixed gas laws may be the key to their ultimate survival. Many benthic fishes use an internal air sac, called a swim bladder to regulate their buoyancy at depth. When caught and rapidly brought to the surface, the gas inside this bladder expands faster than it can be offloaded via the blood resulting in “barotrauma.” The “Physics for Fishers” program involves high school students who use their knowledge of biology and physics to develop educational materials and products for fishers so they understand what is happening to the fish they release.




11:10: Invited Talk:- Maria Simani, California Science Project: “Introduction to Next Generation Science Standards”

In this presentation, participants will become familiar with the development of the Next Generation Science Standards, their structure, and their vision. Implications for classroom instruction will be discussed and resources will be distributed.


As usual, we will have lunch, Show and Tell time, and an order of magnitude contest with door prizes!


1:15: Invited talk - Jeff Orlinsky, California Science Teacher Association,
“The Next Generation Science Standards: What Happened to the First Generation?”

This presentation will cover the Basic components of the CA NGSS. The CA NGSS are based on three dimensions (scientific and engineering practices, disciplinary core ideas, and crosscutting concepts). Along with these dimensions are alignment with the CA Common Core Standards, a list of science practices and performance expectations. The presenter will help navigate the audience through these changes and highlight some of the major differences between the content standards and the Next Generation Science Standards. Also included in the discussion will be the State proposed timeline for implementation of the new standards.


2:05: Invited talk: – Dean Gilbert, Orange County Department of Education,
“Implementation Ideas for NGSS”

As Science Coordinator for the OCDE, I have already been training teachers on implementing NGSS.  In this talk I both introduce the Next Generation Science Standards and suggest methods for their implementation.

These are only a few of the awesome sessions. We hope to see you there!


Saturday, October 11, 2014

Inclines Video





Watch my latest video for AAPT Films (above). You can help your students understand a topic that gives many students trouble: Inclines. Many students struggle with learning inclines, so how can we introduce this concept convincingly? Learn how in the next seven minutes!





Use experiment to help students understand inclines!




You can start by showing students a frictionless situation. In this case, the gravity that is pulling it down the hill is weakened by the flatness of the slope. 

ACCELERATION

The acceleration due to gravity is weakened by a factor that depends on the angle.  Can you imagine a function of theta, that starts off at zero then grows to its maximum at 90 degrees?  Why yes, its sine.

I do this lab in my introduction to trigonometry unit.   It’s

 called diluting acceleration


FORCES


When it comes to forces on inclines, here are a few tips.


You will want to introduce this AFTER you have discussed 

friction on a flat surface, and of course Newton’s Laws, 

especially Newton’s 3rd Law.  That’s because the normal 

force is often an equal and opposite reaction to other forces.  


FRICTION







In most cases, friction opposes motion, so if the block was 

sliding down the hill, the friction – kinetic friction- would be 

up the hill, and if the block was sliding up the hill, the 

friction would be down the hill.  

Wednesday, September 17, 2014

SCAPTI Photos and Highlights

I am posting photos from a successful Southern California Advanced Physics Teaching Institute (SCAPTI) workshop. We had two week-long sessions this summer with around 40 teachers in attendance, about 20 at each session. Each teacher received an excellent goodie bag full of lab supplies and a thick binder filled with useful curriculum. 

Already looking forward to next summer! Here's the flier.



A spinning aquarium demonstrates 
centripetal force



Hands-on Laboratory Instruction: 
in this case, momentum collision with photogates



Participants work in small groups 
and actually get to do the labs. 




Several demonstrations explained, 
as well as the physics behind them.



Two photogates can report to a single terminal




There is often time for one-on-one instruction on 

confusing ideas and finer details.





James Lincoln, MS, MEd, explains how

 torque is proportionate to radius.





Participants immediately apply the idea of torque to an introductory experiment.





The units of torque are worked out, answering a specific question.  It turns out they are not Joules, but Joules per radian.

Information on the next upcoming workshop will be found at www.scapti.org

Monday, September 1, 2014

UV Light: Demos and Experiments



Ultraviolet Light: Demos & Experiments Video is organized into several sections, including Absorbing UV Light, Fluorescence and Ultraviolet Light, Three Colors of Ultraviolet Light (UV-A, UV-B, and UV-C), The Discovery of UV Light, the Mercury Spectrum, and Phosphorescence. 

Through this video, you will learn about UV (ultraviolet) light, and it might save your life. Why? Ultraviolet light is more energetic than regular light—we sometimes call it “ionizing radiation” because it has the power to ionize the electrons in molecules, like DNA, and cause damage. In the video, surely you will be interested to see an original sunblock demo!



Absorbing UV Light

UV light is invisible to us, but its energy can make other objects glow. You will see white socks glowing under UV light, but it is actually the detergent residue that glows, not the socks themselves.




It doesn’t always take UV light to make things glow. These liquids [below] will glow under a blue light, but not all will glow under a red light.




Blue and violet lights are different from other colors, because they are more energetic, higher in frequency. Their higher frequency light is absorbed and re-emited as lower energy light.

These plastic beads are sensitive to ultraviolet light, and below you will see them glowing and colorful and UV light and in sunlight.




However, you will see that under a pane of window glass [below], the beads no longer change color.



Flowers Transformed--Through an Insect's Eyes







The video is almost ten minutes long which makes it a double video, power-packed with information. You will want to pause and re-watch segments and demos. 

Tuesday, August 19, 2014

New Physics Teacher Workshop: August 23, 2014


If you are a new teacher or a career-change teacher looking

to learn interactive teaching methods, then the New Physics

Teacher Workshop is for you!


You can start the new school year right with innovative

ideas for labs and demos. While workshop leaders  

sometimes lecture briefly, most of your time will be spent on 

hands-on activities. 

At NPTW, you get to try out the lab, so you can experience 

what students will experience. 

You might also receive excellent handouts to use with your 

students and you will be directed 

to other resources that will help you become the best physics 

teacher you can be.


And let's not forget the awesome goodie bags! I can't tell you 

everything that will be in the bag yet, but if you want a 

Newton's Cradle AND you want to brush up on Mechanics 

and Heat/Thermodynamics topics, then come to the 

workshop on Saturday. 


James Lincoln, spending some quality time
 with an array of Newton's cradles.

Make sure to RSVP email James 

Lincoln (SCAAPT President and one of the workshop 

leaders)at LincolnPhysics@gmail.com.

Saturday, August 23, 2014
@ USC


Topics: Mechanics & Heat/Thermodynamics
To RSVP, email James Lincoln atLincolnPhysics@gmail.com.