## 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!!

in support of Evergreen sec

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

## 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

 version 20August 2013. http://weelookang.blogspot.com/2010/06/ejs-open-source-kepler-system-model-by.html http://weelookang.blogspot.sg/2013/08/enhanced-keplers-model-after-student.html prototype: https://dl.dropboxusercontent.com/u/44365627/lookangEJSworkspace/export/ejs_KeplerSystem3rdLaw09.jar older version:https://dl.dropbox.com/u/44365627/lookangEJSworkspace/export/ejs_KeplerSystem3rdLaw03.jar author: timberlake and lookang worksheets by (lead) YJC: same link of four simulations https://www.dropbox.com/s/53vztw6meupn4r5/GravitationYJC.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 worksheets by (lead) IJC: https://www.dropbox.com/s/ssfismpu1683l3k/RippleTankIJC.zip

 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 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.

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
Author: Todd Timberlake and lookang

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...

## 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?
Dropbox: https://www.dropbox.com/s/f03cok6r2p8xjjo/SDLnCoLlookang.pptx

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.

 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
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

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

http://www.cabrillo.edu/~dbrown/tracker/

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

 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(Î¸), 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, Î¸0 = 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 anti-phase  ModelA: x = 0.072*sin(3.348*t+3.158) https://dl.dropbox.com/u/44365627/TrackerDigitalLibrarySG/Tracker%20HCI%20JitNing%202012%20Sharing%20with%20Beginning%20Teachers/Pendulum/Pendulum_2antiphaselookang.trz author: lookang model, 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