Computational Modeling in Physics

As part of my action research project for my Master of Natural Science degree from Arizona State University (home of Modeling Instruction), my research partner Mr. Wirth and I looked at how we could apply computational modeling at several key points in the curriculum to improve students’ understanding of physics.

We worked with a small sample group, but we had some promising results. Spreadsheets allowed students to solve more complex problems than can typically be solved in a first-year physics course. Spreadsheets freed students a bit to think about the problem rather than focusing on the computation, though learning to graph and write equations in excel was challenging.

You can find our complete report here.

Track Meet Management: RaceTab & Athletic.net

My school had the privilege of hosting our parish track meet last week.  I used a combination of the Athletic.net website and RaceTab software to manage entries, seed heats, score, and post results.  Each one has a few quirks, but as a whole, they worked very well.

Athletic.net

Athletic.net is a great resource for track athletes and coaches.  It’s an excellent tool for posting times/distances and tracking athletes’ progress.  Many meets I attend upload their meet results, and they appear automatically for my athletes.  I can enter other meets manually.

For hosting a meet, which you can do for free (though becoming a site supporter was only $45/year and grants you access to many features unavailable to free users).  I also considered using Direct Athletics to collect entries for the meet, but they charge 0.50 cents per athlete (when I asked if he meant 50 cents or half-a-cent, they guy just repeated that it costs 0.50 cents — I really don’t think he knows what that means).  So, not wanting to engage in a big debate when I received a bill for $100 instead of $1, I went with Athletic.net.    Coaches register at Athletic.net and submit entries to each event.  Definitely beats what we’ve done in the past, which is to receive FAXES (um, it’s 2014, let’s move past the fax) of barely legible hand-written names for entries.

The majority of the visiting coaches don’t use athletic.net, so they all had to create (free) accounts.  It does take some time once you create your account to be approved and assigned to your school, especially if there’s already a coach assigned to that team from previous years.  So, those coaches that waited until the last minute ran into an obstacle there, but they were all able to submit entries fine.  Having all the times and distances right there for seeding was excellent.

Once entries were in, I could just download them to my meet management software.  They offer many different download formats, and it worked flawlessly.  When the meet was over last night, I just exported the results from RaceTab and uploaded them to athletic.net.  Now, the results are available online for anyone interested, and visiting coaches have them at their disposal.  Now, when I go to register for my next meet, Athletic.net will use their best marks for their entries.

RaceTab

In the past, I’d just used an Excel spreadsheet to do results and scoring, which worked well.  But, since athletic.net offers the RaceTab format to download entries, I thought I’d try it, since RaceTab is free to download and use.  It was painless to import entries.  Then, seeding heats and flights wasn’t bad, once I figured out what all the preferences and options meant.  I was able to get a printout of events, heats, entries, etc. to coaches the morning of the meet so they could come ready with any errors or scratches.

During the meet, all timing was done by hand, so we manually entered results.  With one computer, we were able to keep up (there were only 6 schools, so not a huge job).  I recruited some of my students to help enter times and distances in the computer.  I had to leave the press box to handle lots of other issues at the meet, but they managed to enter everything while I was gone with about 5 minutes of training.  A couple lessons learned:

  • On high jump or pole vault where ties were broken by number of missed attempts, you must enter places by hand – don’t click “Score” or it will change them back to a tie.
  • When we had some athletes finish but we only timed the top 6 places, RaceTab was doing something weird by placing those “no-time” runners first… Still not sure why.  But, if you left them blank it scratched them.  Not sure how to enter that someone finished but wasn’t timed.
  • My students weren’t terribly conscious of the difference between 1:55:33 and 1:55.33 (decimal instead of colon).  Coaches’ entries also had this problem occasionally.  I think possibly RaceTab or athletic.net should integrate some validation–there’s no way an 800m run would take almost 2 hours…  However, I understand there are a huge number of events and variations therein with cross country, road races, 5Ks, 10Ks, indoor track, etc. that these programs are used for, so I guess for the time being we just have to be careful about how we input data.

RaceTab calculated team scores on-the-fly, so the minute the last event finished we had team scores and places ready to go.  I exported a results report to send to our media outlets.  And I was able to export a set of results to upload back into athletic.net.

Definitely a positive experience for me.  Athletic.net removed many of the headaches of receiving entries and sending out results and performances. RaceTab, once entries were imported, made seeding quick and required minimal training for my volunteers to learn to use.

Integrating Math, Science, and the Common Core into Career & Technical Education

On December 12, 2013, I had the pleasure of leading St. Landry Parish Career & Tech Teachers in a workshop on how to integrate math and science across the curriculum.  Here, I’ll post links to resources referenced in the presentation.

Performance Tasks

Project-Based Learning

Credits:

http://www.achieve.org/CCSS-CTE-BridgingtheDivide
http://www.achieve.org/ccss-cte-workshop-planning-tools

Integrating CCSS Math & ELA Practices in Science

On November 21, 2013, I had the pleasure of leading a professional development workshop for St. Landry Parish teachers on integrating common core math and ELA into our science classes.  Here you will find my presentation and links to the resources referenced in the presentation.

 Project-Based Learning Resources

Whiteboarding Resources

Graphing Calculator Alternatives

Below are a set of alternatives to a TI-84 graphing calculator.  Whether you have a computer, iPhone, iPad, or Android device, there are many options for you.

Web-based

Desmos – this can do some pretty cool things.  Check it out.

Windows PC Computer

Follow these instructions to install Wabbit-emu, a TI-84 calculator emulator. (Instructions courtesy of Brockport Central School District).

iPhone/iPad/iPod

None of these have been tested by me personally, but the reviews are solid:

Free Graphing Calculator (free)

Quick Graph: Your Scientific Graphing Calculator (free)

Android

Algeo Graphing Calculator (free)

Wabbit Emu (app) TI-84+ emulator, requires a calculator ROM file

Andie Graph (another TI-83 emulator, but requires some work to set up)

Mac Computer

See Mr. Cheng’s site for instructions

Wall-Size Periodic Table

I’ve produced a printable periodic table for posting on the wall in my classroom (updated April 2017). I thought other teachers might wish to do the same, so I’m making it available here.

This version is designed to be printed in color on 4×6 photo paper (I chose matte finish for less glare, but glossy might work too).  I had mine printed at Amazon Prints for about $11.00, though many local or chain shops may have special deals that would allow you to get this printed pretty cheaply. Each individual element block is then taped together on the back or glued onto a backing material. The final dimensions are about 6 feet wide and 3-4 feet tall.

The periodic table features include:

  • Element name, symbol, atomic number, and atomic mass
    • Includes updated names and symbols adopted by IUPAC through 2016
  • Common ions for most elements
  • Color-coded background for element families/groups
  • Symbols in black (solid), blue (liquid), or red (gas) elements (at room temp.) Synthetic elements are in gray.
  • Group numbers above each column (1 – 18)

To print your own, here is a zip file of jpeg photos that you can upload or bring to your photo printer:

Periodic Table Images ZIP file

The source files used to produce the images are provided here should you want to make any adjustments.  The element database is an excel file, which is used in combination with word’s mail merge capabilities.

PT-4×6-Color-Merged

PT-4×6-Color-Template

PT-Element_Data_Base

Note: images were produced by first saving the merged word document as a PDF and then using ImageMagick command:

magick.exe -density 300 PT-4x6-Color-Merged.pdf[0-117] 
-background white -alpha remove -resize 770x996 -gravity
center -extent 800x1200 element.jpg

Version 1.0

My previous classroom had a very large blank wall to accommodate a very large periodic table.  This is how it looked in my classroom.

The data is mostly based on the information in the element data base downloaded from Central High School’s website in St. Paul, MN, with a few corrections and additions from Wikipedia.org and WebElements.com.

The Periodic Table

Here are the printable versions:

Periodic Table – Merged (MS Word .doc)

Periodic Table – Merged (PDF)

UPDATE:  I’ve since created a version with two elements to a page so it’s not quite as huge.

Merged-half-page (MS Word .docx)

Source Files

These files were used to produce the periodic table using MS Word’s mail merge capabilities. Should you like to change it to your liking, you can download these files and produce your own.

PT Element Data Base (MS Excel .xls)

PT Mail Merge Template (MS Word .doc)

PT Mail Merge Template – half page (MS Word .doc)

Electric Field Visualization Software (EM Field)

This summer, I’m at Arizona State University taking a modeling instruction workshop in physics – electricity and magnetism.  In dealing with electric fields (vectors and lines), potential, and equipotential lines, the curriculum materials rely on EM Field software that hasn’t been updated in many years and is no longer available for purchase or download.  The program is a 16-bit windows-95 era program and won’t even run anymore on Windows 7. 

So, I set out to try to build a similar simulation with the same functionality online to make it available to other teachers.

Check it out and leave me your feedback about what works, what doesn’t work, and any suggestions for improvement.

The following student-exploration worksheet is based on Unit 1 – Worksheet 3a from the Modeling E&M materials, but I thought I would provide it here in case teachers wanted to use it.  The directions are not very refined, but it is a start.

E&M Unit 1 Worksheet 4a – Web-based EM Field version

Empirical Formula Lab: Zinc Chloride

Procedures

1. Find the mass of a clean, dry, labeled beaker. (49.45 g)

2. Add zinc to the beaker and find its mass. (52.72 g)

3. Add 50 ml of HCl to the beaker. Record observations.

4. Place the beaker on a hot plate to evaporate the water.

Day 2:

5. Find the mass of the zinc chloride left in the beaker.  Make sure all water has been driven off.

Final Mass of Beaker with Zinc Chloride:  56.27 g

Now, you have enough information to determine the empirical formula of Zinc Chloride.

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