Wednesday, January 29, 2014

Tracker Ball Toss Up

Tracker Ball Toss Up by Douglas Brown and model by lookang $v_{y}$ = 3.94 and $f_{y}$ = 2*-4.837, where numbers are determined by analysis of trend fitting curves coefficients


http://weelookang.blogspot.sg/2014/01/tracker-ball-toss-up.html
https://dl.dropboxusercontent.com/u/44365627/TrackerDigitalLibrarySG/bosstossup.trz
author of Tracker 4.83: Douglas Brown jar mirrorauthor: tracker and video by douglas brown, model by lookang vy = 3.94 and fy = 2*-4.837, where numbers are determined by analysis of trend fitting curves coefficients


appreciate if anyone can try out this concept test and feedback problems faced!
thanks!!
https://docs.google.com/forms/d/1zm9NWWC7DWHkO2OYdbf150YyivJFPJeuT5vkO_KFKdI/viewform

in support of Evergreen sec

OUr PLT Google site: https://sites.google.com/a/moe.edu.sg/2014-physics-plc/

ACESS principles of learning Carmean and Haefner (2002). https://academictech.doit.wisc.edu/blend/design/principles

  1. active worksheet 
    1. design needs explicit modelling instruction pedagogy to allow scientific thinking
    2. design needs actual screenshots of activity to do and collect evidences for the discussion
      1. slope numbers to fill in a table from data analysis tool
      2. visualization of velocity and acceleration vectors   
    3. clarity of terms used velocity and speed = |velocity| and consistently use the same terms
    4. clarity in terms of learning goals, is it direction, velocity, gradient of s vs t, increasing/decreasing important? or is it just $ \frac{dy}{dt} = v $

    5. Region
      Direction of motion
      Velocity (Positive, Negative or Zero)
      Gradient of displacement-
      time graph (Positive, Negative or Zero)
      Position of velocity-
      time graph (Above, Below or Intersecting the horizontal axis)
      A
      Upwards
      Positive
      Positive
      Above the horizontal axis
      B
      Change direction
      Zero
      Zero
      Intersecting the horizontal axis
      C
      Downwards
      Negative
      Negative
      Below the horizontal axis
    6. performance or learning goals with end in mind Understanding By Design
  2. contextual 
    1. video of real ball toss up
    2. video of an extension application problem bungee jump!
  3. engaging, 2 teachers or more to support technical, pedagogical and content  
  4. social, a commonly understood social structure (find partners near you etc) is needed to scaffold students' discussion  
    1. teachers are key to support discussions especially when learning is not happening as planned
  5. student centred, a balance is needed for teacher explicit instruction, demo show and tell in the reflection-closure lesson. 

Research principles:

  1. the pre-post test needs to be measure exactly from is taught explicitly in the treatment
  2. the form and format need to be on the e- format to compliment the e- treatment


Site for students https://sites.google.com/a/moe.edu.sg/2014-sec-3-physics-performance-task/





Wednesday, January 22, 2014

6th IPSG A-level Physics

6th IPSG A-level Physics Call for Adoption: Java Simulation Design for Teaching and Learning NRF2011-EDU001-EL001
Title: 6th IPSG  A-level Physics
Date: 22 Jan 2014 (Wed) 
Time: 2:00 pm – 5:00 pm 
Venue: Innova Junior College.
Objective: The objective of the sharing session is for JC physics teachers to get together to network and share their teaching experiences and good practices. In short, it is a platform for teachers to get together in an informal setting to talk about JC physics teaching .
Format: Each presentation/ workshop should be 30 min or 60 min long, including any Q&A sessions. Categories:
  1. Hands-On
  2. Experiments
  3. Enrichment Activities
  4. Demonstrations
  5. Teaching Strategies
  6. Assessment
  7. Others 
Online submission: www.tinyurl.com/6th-physicsipsg-submission




Abstracts from the 5th IPSG sharings held this year have been uploaded onto the Physics IPSG website and can be found via this link: http://physicsipsg.wordpress.com/concurrent-sessions/

www.tinyurl.com/6th-physicsipsg-submission

Title: Call for Adoption: Java Simulation Design for Teaching and Learning NRF2011-EDU001-EL001

Abstract:
We have develop, prototype and test-bed Open Source Physics computer models and complete lesson packages, that are realistic and accurate for the benefit of all Grade 11 and 12 students in the world, freely downloadable on http://weelookang.blogspot.sg to support pedagogically sound practices such as virtual laboratory, argument real laboratory and even on-line flipped classes as announced by Minister Heng recently as a student on-line learning space. This sessions aims to share the body of knowledge of our experiences in using these simulations in River Valley High, Yishun JC, Serangoon JC, Innova JC and Anderson JC and network with participants to allow them to bring our lesson packages (Collision Carts Model -Best School Research Paper Winner 5th Design Pedagogy Conference, Ripple Tank Model, Magnet and Solenoid Model, 4 Gravity Models - MOEHQ Innergy Gold award 2012, Simple Wave Model etc) and use them more effectively for a student centric education. 
Our principal findings suggests skilful teaching with these computer models can increase interactive engagement, better visualization and sense making, to be key to allowing students to be like 'scientists', ask question, collect data, evaluate, elaborate and explain based on evidences from the computer models and the real world. 

Presenters:
wee_loo_kang@moe.gov.sg
lim_ai_phing@moe.edu.sg
lee_tat_leong@moe.edu.sg
yeo_wee_leng@moe.edu.sg
lim_chew_ling@moe.edu.sg
goh_giam_hwee@moe.edu.sg
ong_chee_wah@moe.edu.sg
ng_soo_kok@moe.edu.sg
goh_khoon_song@moe.edu.sg
lim_ee-peow@moe.edu.sg
lye_sze_yee@moe.gov.sg


Hands-on/Experiments


Logistics
computer lab




collision cart
http://weelookang.blogspot.sg/2013/03/collision-carts-real-and-ideal-combined.html
https://dl.dropboxusercontent.com/u/44365627/lookangEJSworkspace/export/ejs_model_Momentum1DForceModel04.jar
author: lookang, paco and engrg1
worksheets by
(lead) AJC: https://www.dropbox.com/s/5obo5awn3w3zrgr/CollsionCartsAJC.zip
(lead) RVHS: https://www.dropbox.com/s/8bq51hqa1jsjcvn/CollsionCartsRVHS.zip
IJC https://www.dropbox.com/s/ztwc4pkvtc7ho50/CollisoncartsIJC.zip
SRJC: https://www.dropbox.com/s/m4yrerc97fgesn2/CollisioncartsSRJC.zip
YJC: https://www.dropbox.com/s/uguy3ewndj0pqxr/CollisionCartsYJC2013.zip

OPTION added as request by HCI: bar magnet oscillating inside a solenoid java applet
http://weelookang.blogspot.sg/2013/07/bar-magnet-oscillating-inside-solenoid.html
falling magnet through coil simulation.
https://dl.dropboxusercontent.com/u/44365627/lookangEJSworkspace/export/ejs_FallingMagnet13_4.3.0.jar
author: paco, lookang,and engrg1
worksheets by (lead) AJC: https://www.dropbox.com/s/a38tmxslprzmtkw/FallingMagnetAJC.zip
RVHS: https://www.dropbox.com/s/siievhgeyihyxn8/FallingMagnetRVHS.zip
RVHS: https://www.dropbox.com/s/ljnxqabi2gdgprd/FallingMagnetRVHS2013.zip
SRJC: https://www.dropbox.com/s/0t2upmmlu0ltfoh/FallingMagnetSRJC.zip
SRJC: https://www.dropbox.com/s/kbr5r06ba1i0wlv/FallingMagnetSRJC2013.zip

http://weelookang.blogspot.sg/2010/08/ejs-open-source-gravitational-field.html
prototype working by using text to render $//phi_net$ and equation to render " - \\frac{G{M_1}}{{r_1}}" work:https://dl.dropboxusercontent.com/u/44365627/lookangEJSworkspace/export/ejs_GField_and_Potential_1D_v8wee.jar
working model:
https://dl.dropbox.com/u/44365627/lookangEJSworkspace/export/ejs_GField_and_Potential_1D_v7wee.jar
author: lookang and andrew based on andrew duffy early model
worksheets by (lead) YJC: same link of four simulations https://www.dropbox.com/s/53vztw6meupn4r5/GravitationYJC.zip
version Jan 2013 http://weelookang.blogspot.sg/2010/08/ejs-open-source-gravitational-field_10.html 
picture of computer model of Earth and Moon gravity system
https://dl.dropbox.com/u/44365627/lookangEJSworkspace/export/ejs_GFieldandPotential1Dv7EarthMoon.jar
author: lookang and andrew based on andrew duffy early model
worksheets by (lead) YJC: same link of four simulations https://www.dropbox.com/s/53vztw6meupn4r5/GravitationYJC.zip
version 08 March 2013 with reconnected html and zoom slider
http://weelookang.blogspot.sg/2010/07/ejs-open-source-geostationary-satellite.html
https://dl.dropbox.com/u/44365627/lookangEJSworkspace/export/ejs_EarthAndSatelite.jar
author: lookang and paco
worksheets by (lead) YJC: same link of four simulations https://www.dropbox.com/s/53vztw6meupn4r5/GravitationYJC.zip



MIN = xsource
MAX =Math.sqrt((xpoint-xsource)*(xpoint-xsource)+(ypoint-ysource)*(ypoint-ysource))+xsource
X(x,t)= "xsource+sign*((x-xsource)*cs-0.1*A1*Math.cos(omega*t-k*(x-xsource))*sc)"
Y(x,t) ="ysource+sign*((x-xsource)*sc+0.1*A1*Math.cos(omega*t-k*(x-xsource))*cs)"
where
angle = Math.atan((ypoint-ysource)/(xpoint-xsource));
cs=Math.cos(angle); / /lookang & FKH
sc=Math.sin(angle);//lookang & FKH
cs2=Math.cos(angle2); // use to rotate to universal axes
sc2=Math.sin(angle2); // use to rotate to universal axes
using if ((xsourcexpoint)){ sign = -1;  } // fix another bug where the curve flips
the using new feature with new wave form to allow counting of number of wavelength with RVHS tat leong in ripple tank sim plus some bug fixes. made dt smaller 0.01 for smooth graph
Ripple Tank Model (Wee, Duffy, Aguirregabiria, Hwang & Lee, 2012) with simplified physics equations modeled, realistic 2D and 3D (shown) visualizations, hints and scientific measurement tools for inquiry activities and data gathering for inquiry learning
https://dl.dropboxusercontent.com/u/44365627/lookangEJSworkspace/export/ejs_model_Ripple_Tank_Interferencewee13.jar

http://weelookang.blogspot.com/2010/06/open-source-ejs-superposition-of-2.html
added (1) autoscale x axis false, (2) -T/8 button (3) blue color for wave 2 for greater contrast on the projector screen thanks to joshua yeo.
https://dl.dropbox.com/u/44365627/lookangEJSworkspace/export/ejs_WaveFunctionPlotterSuperpositionwee01.jar
author: wolfgang and lookang
worksheets by (lead) SRJC:https://www.dropbox.com/s/uslrrrdkyq2puqe/WavesSRJC.zip


Projectile Motion (with/without air resistance)
http://weelookang.blogspot.com/2010/06/ejs-open-source-creative-commons.html
https://dl.dropbox.com/u/44365627/lookangEJSworkspace/export/ejs_users_sgeducation_lookang_Projectile02.jar
author: lookang based on the works of paco
worksheet by
RVHS (lead): https://www.dropbox.com/s/6tv1twkc5u92pb2/P04%20EduLabs%20%28tr%29%20v2wee.doc

version 26feb 2013 electric field lines drawn when Q1=-1C, Q2 = 2C
http://weelookang.blogspot.com/2013/02/ajc-lesson-with-2-charges-simulation.html
https://dl.dropbox.com/u/44365627/lookangEJSworkspace/export/ejs_twopointcharges18q2work.jar
original authors: Fu-Kwun Hwang and lookang and szeyee
worksheet by:
AJC (lead): https://www.dropbox.com/s/pkh2q4ktsz7pmlf/EJS%20worksheet.docx


  photo gallery


























Saturday, January 18, 2014

Ejs Open Source Moon Phases Java Applet « on: August 17, 2010, 11:49:40 PM »


Ejs Open Source Moon Phases Java Applet 
« on: August 17, 2010, 11:49:40 PM »

Tides are the rise and fall of sea levels caused by the combined effects of the gravitational forces exerted by the Moon and the Sun (modeled) and the rotation of the Earth (not in the model yet).

Some shorelines experience two almost equal high tides and two low tides each day, called a semi-diurnal tide. Some locations experience only one high and one low tide each day, called a diurnal tide. Some locations experience two uneven tides a day, or sometimes one high and one low each day; this is called a mixed tide. The times and amplitude of the tides at a locale are influenced by the alignment of the Sun and Moon (modeled) . by the pattern of tides in the deep ocean, by the amphidromic systems of the oceans and by the shape of the coastline and near-shore bathymetry.
This model assumes the theoretical amplitude of oceanic tides. 
The Sun causes tides, of which the theoretical amplitude is about 25 centimetres (46% of that of the moon) with a cycle time of 12 hours. 


$\ x = 2 R_{earth} + 0.25 (2) $


$\ y = 2 R_{earth} - 0.25 (2)$

Moon causes tides is about 54 centimetres at the highest point, which corresponds to the amplitude that would be reached if the ocean possessed a uniform depth, there were no landmasses, and the Earth were rotating in step with the moon's orbit. 


$\ x = 2 R_{earth} + |0.54 (2) cos \theta | $


$\ y = 2 R_{earth} + |0.54 (2) sin \theta |  $


At spring tide the two effects add to each other to a theoretical level of 79 centimetres (31 in), while at neap tide the theoretical level is reduced to 29 centimetres (11 in). Since the orbits of the Earth about the sun, and the moon about the Earth, are elliptical, tidal amplitudes change somewhat as a result of the varying Earth–sun and Earth–moon distances. 

The combined tidal visualization effect will be:

$\ x = 2 R_{earth} + 0.25 (2) + |0.54 (2) cos \theta | $


$\ y = 2 R_{earth} +  0.25 (2 )+ |0.54 (2) sin \theta |  $


Real amplitudes differ considerably, not only because of depth variations and continental obstacles, but also because wave propagation across the ocean has a natural period of the same order of magnitude as the rotation period: if there were no land masses, it would take about 30 hours for a long wavelength surface wave to propagate along the equator halfway around the Earth (by comparison, the Earth's lithosphere has a natural period of about 57 minutes). Earth tides, which raise and lower the bottom of the ocean, and the tide's own gravitational self attraction are both significant and further complicate the ocean's response to tidal forces.


To model the scientific graphs versus time, the model used

$\ y_{1sun}= 0.25*Math.cos( \frac{2 \pi t}{12} ) // sun where t is in hours $

$\ y_{2moon} = 0.54*Math.cos(\frac {61}{59} \frac{2 \pi t}{12} )// moon where t is in hours $

resultant is

$\ y_{1sun} +y_{2moon} = 0.25*Math.cos( \frac{2 \pi t}{12} )  +0.54*Math.cos(\frac {61}{59} \frac{2 \pi t}{12} ) $


http://weelookang.blogspot.sg/2010/08/ejs-open-source-moon-phases-java-applet.html version 20 Jan 2014
added sea-level modeling by lookang
author: todd timberlake and lookang
Ejs Open Source Moon Phases Java Applet 
https://dl.dropboxusercontent.com/u/44365627/lookangEJSworkspace/export/ejs_model_MoonPhases.jar
https://dl.dropboxusercontent.com/u/44365627/lookangEJSS/export/ejs_model_MoonPhases.jar
https://dl.dropboxusercontent.com/u/44365627/lookangEJSworkspace/export/ejs_users_sgeducation_lookang_MoonPhases.jar



added on January 18 2014
 added high tide and low tide as a response to the Moon's gravitational field.
http://weelookang.blogspot.sg/2010/08/ejs-open-source-moon-phases-java-applet.html version 03 Jan 2011
author: todd timberlake and lookang
Ejs Open Source Moon Phases Java Applet 
https://dl.dropboxusercontent.com/u/44365627/lookangEJSworkspace/export/ejs_model_MoonPhases.jar
https://dl.dropboxusercontent.com/u/44365627/lookangEJSS/export/ejs_model_MoonPhases.jar
https://dl.dropboxusercontent.com/u/44365627/lookangEJSworkspace/export/ejs_users_sgeducation_lookang_MoonPhases.jar






http://weelookang.blogspot.sg/2010/08/ejs-open-source-moon-phases-java-applet.html version 03 Jan 2011
author: todd timberlake and lookang
Ejs Open Source Moon Phases Java Applet 
https://dl.dropboxusercontent.com/u/44365627/lookangEJSS/export/ejs_model_MoonPhases.jar
https://dl.dropboxusercontent.com/u/44365627/lookangEJSworkspace/export/ejs_users_sgeducation_lookang_MoonPhases.jar

earlier version 17 August 2010
 i did not make this, this applet is made by Dr Todd Timberlake http://facultyweb.berry.edu/ttimberlake/

i only remix it so that i can learn phases of moon from the open source computational model:)
for http://sgeducation.blogspot.com/2010/08/personal-note-on-visualisation-and.html
read some article on moon phases, decided to figure out the physics first hand to understand what is so difficult because i didn't know this until now.
learn alot from Youtube, the Ejs applet http://www.compadre.org/osp/items/detail.cfm?ID=9308




Full screen applet
kindly hosted in NTNUJAVA Virtual Physics Laboratory by Professor Fu-Kwun Hwang
http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=1927.0
alternatively, go direct to http://www.phy.ntnu.edu.tw/ntnujava/index.php?board=28.0
Collaborative Community of EJS (Moderator: lookang) and register , login and download all of them for free :) This work is licensed under a Creative Commons Attribution 3.0 Singapore License
Author: Todd Timberlake and lookang

http://www.compadre.org/osp/items/detail.cfm?ID=9308
Taken from http://www.compadre.org/osp/items/detail.cfm?ID=9308

Phases of Moon Model: Lesson Plan http://www.compadre.org/osp/document/ServeFile.cfm?ID=9308&DocID=1370&Attachment=1
A pdf file with a teacher lesson plan for use with the Phases of Moon Model.

Phases of Moon Model: Homework Exploration http://www.compadre.org/osp/document/ServeFile.cfm?ID=9308&DocID=1371&Attachment=1
A pdf file with a college-level homework exploration for use with the Phases… more...
download 206kb .pdf

Wednesday, January 15, 2014

Tracker workshop at Hougang Secondary 2014 Jan

Agenda: ICT connection
Title: Tracker workshop
Venue: Hougang Secondary School
Date: 2014 15th  Jan
Time: 1545-1615 ?
Presenter: Lawrence

I am also preparing for a short talk contextualize in the story of my life?
Google Drive https://docs.google.com/presentation/d/1tDWO9n8VY1PAeSC87OVk6RmfItKruX11uLJvyA6fwuc/pub?start=false&loop=false&delayms=3000
Dropbox: https://www.dropbox.com/s/f03cok6r2p8xjjo/SDLnCoLlookang.pptx













Please check:
1. Tracker is installed, Download Tracker 4.83 installer for: Windows ( may need school Technical Assistant to install)
2. (immediate) Teacher’s notebook and student (future) computer labs.


The workshop sharing is on customized to O level, bouncing ball.

The files can be downloaded here

http://www.opensourcephysics.org/items/detail.cfm?ID=11705 added kinetic model if y = if (t < 0.68, -4.781*t^2+0.124*t+0.001, if(t < 1.48,-5.117*t^2+10.989*t-7.147,if(t < 2.04,-4.855*t^2+17.059*t-16.669,if(t < 2.44,-4.886*t^2+21.867*t-26.337,if(t < 2.78,-4.174*t^2+21.682*t-30.138,0)))))
http://weelookang.blogspot.sg/2012/11/tracker-modeling-in-bouncing-ball.html
https://dl.dropbox.com/u/44365627/TrackerDigitalLibrarySG/Tracker%20ETD/ballbouncelookang01_x264wee.trz
worksheet: https://dl.dropbox.com/u/44365627/TrackerDigitalLibrarySG/Tracker%20ETD/bouncing%20ball%20worksheet%20tracker%20lookangv4answerkeyupdated4.61.docxauthor: lookang


Journal papers

  1. Wee L.K., Charles Chew, Goh G.H.,Lee T.L.,Samuel Tan (2012) Using Tracker as a Pedagogical Tool for Understanding Projectile Motion Physics Education, 47(4): 448. arXiv:1206.6489 [pdf]
  2. Wee L.K. Lee T.L. (2011, 01 June) Video Analysis and Modeling Tool for Physics Education: A workshop for Redesigning Pedagogy at 4th Redesigning Pedagogy conference workshop on Video Analysis and Modeling for Physics Education, National Institute of Education, Nanyang Technological University, Singapore [PDF] to be available from NIE [PPT] arXiv:1207.0220 [pdf]

for the whole library of tracker video and trk file
u can download all here licensed creative commons attributions
https://www.dropbox.com/sh/6tphscl4rfos7wa/tbG3YnvU5D/TrackerDigitalLibrarySG



other resources:
Ferrari travelling at 140± 30 km/h Tracker 

http://weelookang.blogspot.sg/2012/05/what-evidence-of-speed-ferrari-was.html
updated with inputs on length of FERRARI car travel to be 13.0± 1 m with table of data showing 9 frames ending at time t = 0.30 s
https://dl.dropbox.com/u/44365627/TrackerDigitalLibrarySG/TrackerFerrari/ferrari.trz

Falling object with Light Damping Tracker
Tracker Modeling in Light Damping in Shuttle Cock compare to ball: Model BALL is fy = -5.161*2 with y0 = 4.057 and vy = 0.07
http://weelookang.blogspot.sg/2012/08/tracker-modeling-in-light-damping-in.html
https://dl.dropbox.com/u/44365627/TrackerDigitalLibrarySG/Tracker%20HCI%20JitNing%202012%20Sharing%20with%20Beginning%20Teachers/airresistanceshuttlecock/airresistanceshuttlecock.trz
author: jitning and lookang

Bouncing ball Tracker 
http://www.opensourcephysics.org/items/detail.cfm?ID=11705 added kinetic model if y = if (t < 0.68, -4.781*t^2+0.124*t+0.001, if(t < 1.48,-5.117*t^2+10.989*t-7.147,if(t < 2.04,-4.855*t^2+17.059*t-16.669,if(t < 2.44,-4.886*t^2+21.867*t-26.337,if(t < 2.78,-4.174*t^2+21.682*t-30.138,0)))))
http://weelookang.blogspot.sg/2012/11/tracker-modeling-in-bouncing-ball.html
https://dl.dropbox.com/u/44365627/TrackerDigitalLibrarySG/Tracker%20ETD/ballbouncelookang01_x264wee.trz
worksheet: https://dl.dropbox.com/u/44365627/TrackerDigitalLibrarySG/Tracker%20ETD/bouncing%20ball%20worksheet%20tracker%20lookangv4answerkeyupdated4.61.docxauthor: lookang

http://weelookang.blogspot.com/2011/03/tracker-scaling-in-yishun-junior.html
lesson by lookang and jimmy
https://dl.dropbox.com/u/44365627/TrackerDigitalLibrarySG/Tracker%20YJC%20PWS5%20IT/projectilemotion.trz
author: doug brown video, lookang and jimmy model and worksheet


 Sport Science using tracker by RVHS!
Tracker Free Video Analysis for Physics Education by Douglas Brown & Youtube PD by lookang 

http://www.cabrillo.edu/~dbrown/tracker/
http://weelookang.blogspot.sg/2010/03/learning-physics-through-video-analysis.html this video is licensed under Creative Commons Attribution-Share Alike 3.0 Singapore.

Tracker Free Video Modeling for Physics Education by Douglas Brown & Youtube PD by lookang 


http://www.cabrillo.edu/~dbrown/tracker/
http://weelookang.blogspot.sg/2010/03/learning-physics-through-video-analysis.html
this video is licensed under Creative Commons Attribution-Share Alike 3.0 Singapore.
http://creativecommons.org/licenses/by-sa/3.0/sg/



From the video tracked, the jumper takes off at 25 degree.
Tracker Standing Broad Jump
http://weelookang.blogspot.sg/2013/04/tracker-standing-broad-jump.html
https://dl.dropboxusercontent.com/u/44365627/TrackerDigitalLibrarySG/NelsonZhangDiPriPE/broadjump.trz
author: lookang, video by nelson and teacher in zhangdipri


http://weelookang.blogspot.sg/2012/07/tracker-modeling-in-pendulum.html
Tracker Modeling in toy car rolling down a slope is fx = -g*sin(θ), vx0 = 1.478 where g = 2*4.866 (from data analysis of x versus t and quadratic fit, coefficient A = 4.866) vx0 = 1.478 (from data analysis of vx versus t linear fit B = 1.478)
https://dl.dropboxusercontent.com/u/44365627/TrackerDigitalLibrarySG/TrackerNJC/toycarslope.trz
author: Ooi Junwei, Samuel video and lookang model

http://weelookang.blogspot.sg/2013/08/toy-car-rolling-down-steep-and-gentle.html
https://dl.dropboxusercontent.com/u/44365627/TrackerDigitalLibrarySG/TrackerNJC/toycargentleslopefirst.trz
author: Ooi Junwei, Samuel video, analysis lookang

http://weelookang.blogspot.sg/2013/08/toy-car-rolling-down-steep-and-gentle.html
https://dl.dropboxusercontent.com/u/44365627/TrackerDigitalLibrarySG/TrackerNJC/toycarsteepslopefirst.trz
author: Ooi Junwei, Samuel video, analysis lookang


Plastic rod Rolling down a metal V-shaped rail Tracker
Tracker Modeling in plastic rod rolling down a slope  Model is x = -0.157*t^2-0.04*t and   y = -0.0085*t^2-0.0035*t+0.043 with pe potential energy defined as pe = m*g*h and te = pe +K
http://weelookang.blogspot.sg/2012/07/tracker-modeling-in-plastic-rod-rolling.html
https://dl.dropbox.com/u/44365627/TrackerDigitalLibrarySG/Tracker%20ETDAST/rodrollingdown.trz

Wooden rod Rolling down a metal V-shaped rail Tracker
Tracker Modeling in  in wooden rod rolling down a slope  Model is x = -0.11*t^2-0.03*t and   y = -0.006*t^2+0.0355 with pe potential energy defined as pe = m*g*h and te = pe +K
http://weelookang.blogspot.sg/2012/07/tracker-modeling-in-wooden-rod-rolling.html
https://dl.dropbox.com/u/44365627/TrackerDigitalLibrarySG/Tracker%20ETDAST/woodenrodrollingdown.trz
author: lookang


Double Plastic cone rolling up a metal V-shaped rail Tracker
http://weelookang.blogspot.sg/2012/07/tracker-modeling-in-double-cone-rolling.html
Tracker Modeling in  in double cone rolling up a slope  Model is x = 0.176*t-0 and   y = 0.0064*t^2-0.0145*t+0.055 with pe potential energy defined as pe = m*g*h and te = pe +K
https://dl.dropbox.com/u/44365627/TrackerDigitalLibrarySG/Tracker%20ETDAST/doubleconerollingdown.trz
double Wooden cone rolling up a metal V-shaped rail Tracker

http://weelookang.blogspot.sg/2012/07/tracker-modeling-in-wooden-double-cone.html
Tracker Modeling in  in wooden double cone rolling up a slope  Model is x = 0.176*t+0.105 and   y = 0.006*t^2-0.013*t+0.053 with pe potential energy defined as pe = m*g*h and te = pe +K
https://dl.dropbox.com/u/44365627/TrackerDigitalLibrarySG/Tracker%20ETDAST/doubleconerollingdownwooden.trz


Tracker Modeling in Uniform Circular Motion of Fan: Model is fr = -w*w*r where r0 = 0.358 m, θ0 = 124.3 deg, w0 = 236.0 deg/s
http://weelookang.blogspot.sg/2012/08/tracker-modeling-in-uniform-circular.html
https://dl.dropbox.com/u/44365627/TrackerDigitalLibrarySG/Tracker%20HCI%20JitNing%202012%20Sharing%20with%20Beginning%20Teachers/circularmotion%20fan/uniformcircularmotionfan.trz
author: lookang for model, jitning for video


Pendulum Tracker for SHM, in phase, anti-phase, light damping
http://weelookang.blogspot.sg/2012/07/tracker-modeling-in-pendulum.html
Tracker Modeling in Pendulum as SHM single swing: Model is fx = -w*w*x where w = 3.136 with x0 = 1.90E-2 and vx = -0.14
https://dl.dropbox.com/u/44365627/TrackerDigitalLibrarySG/Tracker%20HCI%20JitNing%202012%20Sharing%20with%20Beginning%20Teachers/Pendulum/Pendulum%28Single%29lookang.trz
author: lookang model and jitning video


http://weelookang.blogspot.sg/2012/07/tracker-modeling-in-pendulum.html
Tracker Modeling in Pendulum as  SHM  : Model is fx = -w*w*x where w = 3.724 with x0 = 4.60E-2 and vx = 0 
https://dl.dropbox.com/u/44365627/TrackerDigitalLibrarySG/Tracker%20HCI%20JitNing%202012%20Sharing%20with%20Beginning%20Teachers/Pendulum/Pendulum%28SHM%29lookang.trz
author: lookang model and jitning video

http://weelookang.blogspot.sg/2012/07/tracker-modeling-in-pendulum.html
Tracker Modeling in 2 Pendulum swinging in phase Model1 x = 0.049*sin(3.378*t+0.018)
https://dl.dropbox.com/u/44365627/TrackerDigitalLibrarySG/Tracker%20HCI%20JitNing%202012%20Sharing%20with%20Beginning%20Teachers/Pendulum/Pendulum_1inPhaselookang.trz
author: lookang model and jitning video



http://weelookang.blogspot.sg/2012/07/tracker-modeling-in-pendulum.html
Tracker Modeling in 2 Pendulum swinging in out of phase ModelA: x = 0.032*sin(3.338*t+3.048)
https://dl.dropbox.com/u/44365627/TrackerDigitalLibrarySG/Tracker%20HCI%20JitNing%202012%20Sharing%20with%20Beginning%20Teachers/Pendulum/Pendulum_outofPhase%28Analysis%29lookang.trz
author: lookang model, jitning video
http://weelookang.blogspot.sg/2012/07/tracker-modeling-in-pendulum.html
Tracker Modeling in Light Damping in Ping Pong ball as Pendulum with modeling builder used for exponentialdecay = A*sin(w*t-pi)*e^(1-k*t) , with evidence of A = 0.022, w = 3.052 and k = 0.036 
https://dl.dropbox.com/u/44365627/TrackerDigitalLibrarySG/Tracker%20HCI%20JitNing%202012%20Sharing%20with%20Beginning%20Teachers/Pendulum/Ping%20Pong%20%28SHM%29lookang.trz
author: lookang model, jitning video


Spring mass system Tracker
Tracker Modeling in Pendulum as Spring mass system: Model is fy = -w*w*y where w = 3.136 with vy0 = 9.20E-2 and w = 5.795
http://weelookang.blogspot.sg/2012/08/tracker-modeling-in-spring-mass-system.html
https://dl.dropbox.com/u/44365627/TrackerDigitalLibrarySG/Tracker%20HCI%20JitNing%202012%20Sharing%20with%20Beginning%20Teachers/springmassystem/springmass.trz
author: lookang model, jitning video


Snell's Law of refractive index using Tracker
using video Snell's law of Refraction by  QuantumBoffin , when i = 9.2 degree , r = 6.5 degree
http://weelookang.blogspot.sg/2012/08/snells-law-of-refractive-index.html
https://dl.dropboxusercontent.com/u/44365627/TrackerDigitalLibrarySG/TrackerQuantumBoffin/Snellslawrefractiveindex.trz
author: tracker file lookang, video QuantumBoffin

http://ictconnection.moe.edu.sg/ict-in-action?c=%2Fictconnection%2Fictlib&ptid=711&func=search&search=1&subject=&kw=tracker
Lesson ExampleHits
Learning Physics of Sport Science through Video Analysis& Modeling (Tracker)
Sport science is a discipline that studies the application of scientific principles and techniques with the aim of improving sporting performance. Sport science incorporates physiology, psychology, motor control, bio-mechanics, nutrition, etc.
Sports scientists and performance consultants are growing in demand and employment numbers, with the ever-increasing focus within...
Subject: Physical Education, Physics, Science
Level : JC/CI
Stream : H1/ H2, H3
7726
Learning Physics of Projectile through Video Analysis and Modeling (Tracker)
Projectile motion refers to the motion of an object projected into the air at an angle. A few
examples of this include a soccer ball begin kicked, a baseball begin thrown, or an athlete
long jumping even fireworks and water fountains are examples of projectile motion!
In...
Subject: Physics, Science
Level : Upper Secondary, JC/CI
Stream : Express/ Special, H1/ H2, H3
251


Learning Physics of Pendulum through Video Analysis and Modeling (Tracker)
In this lesson you will learn the fundamentals of pendulum motion by video analysis (study various physics qualities in x and y direction and conduct data analysis such as curve fit and gradient and statistics)and modeling (choosing own quantities to set values to and compare with actual real video footage)...
Subject: Physics, Science
Level : Upper Secondary, JC/CI
Stream : Express/ Special, N(A), N(T), H1/ H2, H3
99
Learning Physics through Real World Video Clips ( Tracker )
We want to engage students and get them to learn Physics in a fun and engaging manner. Through the use of videos and demos, we can motivate our students and build up their passion for Physics.
Subject: Physics
Level : JC/CI
Stream : H1/ H2
46


reference:
http://weelookang.blogspot.sg/p/physics-applets-virtual-lab.html
http://weelookang.blogspot.sg/2013/01/tracker-workshop-at-monfort-secondary.html