## Wednesday, July 30, 2014

### Tracker Basketball thrown collision wall n bounce floor force model

Tracker Basketball thrown collision wall n bounce floor force model

 http://weelookang.blogspot.com/2014/07/tracker-basketball-thrown-collision.html t1 = 0.667, t2 = 0.67 represents collision time of 0.03 s t3 = 1.033, t4 = 1.036  represents collision time of 0.03 s F1x = -2420, F1y = 500 are required values trial and error determined for model to fit based on delta t = 0.03 F2x = 220, F2y = 3500 are required values trial and error determined for model to fit fx = if(t

### Tracker Ball Thrown Hit Wall n Bounce Force Model

Tracker Ball Thrown Hit Wall n Bounce Force Model

 http://weelookang.blogspot.com/2014/07/tracker-ball-thrown-hit-wall-n-bounce.html vx = 6.007 vy = 1.79 fx = if(t<0.433,0,if(t<0.485,-180,if(t<0.833,0,if(t<0.860,+50,0)))) fy = if(t<0.433,-m*g,if(t<0.485,+7,if(t<0.833,-m*g,if(t<0.860,300,-m*g)))) author of video: Yi Chongwen author of model: lookang https://dl.dropboxusercontent.com/u/44365627/lookangEJSworkspace/lookangejss/02_newtonianmechanics_2kinematics/trz/basketballgreenballcollisionmodelYi%20Chongwen_greenballmodel.trz

### Tracker Pendulum Collision Model

Tracker Pendulum Collision Model

 http://weelookang.blogspot.sg/2014/07/tracker-pendulum-collision-model.html fr = -m*ω*ω*r fθ = if(t<0.35,-m*g*cos(θ),if(t<0.38,-m*15,-m*g*cos(θ))) author video: tang_yimian author of model: lookang https://dl.dropboxusercontent.com/u/44365627/lookangEJSworkspace/lookangejss/02_newtonianmechanics_8oscillations/trz/pendulumcollisionmodeltang_yimianmodel.trz

## Monday, July 28, 2014

### Singapore Digital Library is OPEN in Tracker

Officially in Tracker https://www.cabrillo.edu/~dbrown/tracker/ as Shared Library. awesome :)

 Officially in Tracker as Shared Library http://iwant2study.org/lookangejss/indexTRZdl.php

## Thanks to the Open Source Physics Tracker Team:

1. I wish to acknowledge the passionate contributions of Douglas Brown, Wolfgang Christian, Mario Belloni, Anne Cox, Francisco Esquembre, Harvey Gould, Bill Junkin, Aaron Titus and Jan Tobochnik for their creation of Tracker video analysis and modeling tool.

## And the Singapore Tracker Community such as:

1. Wee Loo Kang Lawrence, Educational Technology Division, Ministry of Education, Singapore
2. Lim Jit Ning, Hwa Chong Institution, Singapore
3. Lee Tat Leong, River Valley High, Educational Technology Division, Ministry of Education, Singapore
4. Samuel Ooi, National Junior College, Singapore
5. Goh Giam Hwee Jimmy, Yishun Junior College, Singapore
6. Leong Tze Kwang, Raffles Girls Secondary, Singapore
7. Thio Cher Kuan, Raffles Girls Secondary, Singapore
8. Siow Seau Yan Sharon, Raffles Girls Secondary, Singapore
9. Ning Hwee Tiang, National Junior College, Singapore
10. Tan Kim Kia, Evergreen Secondary School, Singapore
11. Lim Ai Phing, River Valley High School, Singapore
12. Neiw Chun Hao Wilson, River Valley High School, Singapore

## Wednesday, July 23, 2014

### Sharing of edulab017

Sharing of edulab017.
thanks to Tan Ching for the first draft :)
https://www.dropbox.com/s/l1wwi3h6cekvjjm/LD%20meeting%2024%20July%202014.pptx

gifs

## Tuesday, July 22, 2014

### Tracker fast projectile collision model

Tracker fast projectile collision model

 http://weelookang.blogspot.sg/2014/07/tracker-fast-projectile-collision-model.html video: anushka_pisupati, model: lookang x = if(t<0.502,6.387E-1*t^2+4.028E0*t-2.518E-2,-4.647E-1*t+2.166E0) y= if(t<0.502,-4.820E-1*t^2-8.083E-3*t+2.552E-3,-6.051E-1*t^2+1.005E0*t-4.682E-1) https://dl.dropboxusercontent.com/u/44365627/lookangEJSworkspace/lookangejss/02_newtonianmechanics_2kinematics/trz/fastprojectileanushka_pisupatimodel.trz

Still cannot get the dynamics model to represent the model :(
if you know drop me a comment below!

## Monday, July 21, 2014

### National ICT Seminar Kranji Secondary

Event: National ICT Seminar
Title: Power-up your lessons with The ICT Connection and our ETD-Led Learning Communities!
Venue: Kranji Secondary
Date: 12 august 2014
Time: 1400-1700

The synopsis of the sharing for 3 sessions

Interested in how ICT can be used meaningfully in teaching and learning? Keen to access a lesson resource repository with good ICT lessons? Wish to connect with like-minded practitioners and learn from each other? Seek no further. We share with you a repertoire of ideas from the peer-reviewed lesson packages that reside in The ICT Connection and embark on the journey with our ETD-Led Learning Communities ( Mobilised Learning, Collaborative Mathematics, Digital Games-Based Learning), designing and implementing ICT-enabled lessons!

We have 4 presenters to share at various slots:

1) Mr Wee Loo Kang

2) Mr Yu Yoong Kheong

3) Mr Nelson Chong

4) Miss Oei Hun Ling

Educational Technology Division, Ministry of Education.

## Friday, July 18, 2014

### Invitation to present at W6 ICT Committee Professional Development Seminar 2014 - 18 July 2014 @ Jurong Sec

in 2014, Invitation to present at W6 ICT Committee Professional Development Seminar 2014 - 18 July 2014 @ Jurong Sec. thanks to lee yong for the invite again.

Title: Open Source Physics Tracker
Venue: Jurong Sec
Time: 1400-1700
Session Time: 25 minutes
URL: http://weelookang.blogspot.sg/2014/04/invitation-to-present-at-w6-ict.html
URL: http://w6ict.beaconpri.sg/concurrent-sessions-2014/
Past URL: http://weelookang.blogspot.sg/2013/04/invitation-to-present-at-w6-ict.html

## Abstract:

Previously in 2013 W6 ICT Seminar, I shared about the Open Source Physics community with my  +75 (now, +100) computer models that I have remixed to suit the Primary, Secondary and A level Physics syllabus. In 2014, I will share about the video analysis and modelling tracker project by Douglas Brown from the Open Source Physics. I will show how teachers can download (look for dropbox links) and use these tracker files *.trz that for more interactive engagement (analysis and modelling) lessons available from http://weelookang.blogspot.sg/p/physics-applets-virtual-lab.html (search keyword  "tracker") and http://ictconnection.moe.edu.sg/ict-in-action also housed some of the tried lessons. This sharing with be using this link http://weelookang.blogspot.sg/2014/04/invitation-to-present-at-w6-ict.html with downloadable resources for the benefit of teachers and students.

 http://weelookang.blogspot.sg/2014/01/tracker-ball-toss-up.html https://dl.dropboxusercontent.com/u/44365627/TrackerDigitalLibrarySG/bosstossup.trz author: 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

 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/2012/05/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 author: lookang and darren for useful discussion https://dl.dropbox.com/u/44365627/TrackerDigitalLibrarySG/TrackerFerrari/ferrari.trz

 http://weelookang.blogspot.sg/2014/01/tracker-ball-toss-up.html https://dl.dropboxusercontent.com/u/44365627/TrackerDigitalLibrarySG/bosstossup.trz author: 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

 http://www.opensourcephysics.org/items/detail.cfm?ID=11705added 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.htmlhttps://dl.dropbox.com/u/44365627/TrackerDigitalLibrarySG/Tracker%20ETD/ballbouncelookang01_x264wee.trzworksheet: https://dl.dropbox.com/u/44365627/TrackerDigitalLibrarySG/Tracker%20ETD/bouncing%20ball%20worksheet%20tracker%20lookangv4answerkeyupdated4.61.docx

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

 http://weelookang.blogspot.sg/2013/08/toy-car-rolling-down-slope-by-ooi.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

 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

 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

 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

 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

 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

 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

 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&func=search?func=search&kw=tracker&subject=&school=

1
 Learning Physics of Free Fall through Video Analysis& Modeling (Tracker) In this lesson you will learn the fundamentals of free fall motion by video analysis (study various kinematics qualities such... Subjects : Physics School : Evergreen Sec Sch
Tan Kim Kia
(0)
7 / 11-Apr-2014 (Tue)26-Mar-2014 (Wed)1-Apr-2014 (Tue)
2
 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... Subjects : Physics, Science School : Hwa Chong Institution
Lim Jit Ning
(1)
111 / 31128-Aug-2012 (Tue)5-Jul-2012 (Thu)28-Aug-2012 (Tue)
3
 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... Subjects : Physics, Science School : Yishun Junior College
Jimmy Goh
(1)
262 / 4565-Jul-2012 (Thu)5-Apr-2011 (Tue)5-Jul-2012 (Thu)
4
 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... Subjects : Physical Education, Physics, Science School : River Valley High Sch
LEE Tat Leong
(8)
7837 / 120127-Apr-2010 (Tue)22-Feb-2010 (Mon)5-Jul-2012 (Thu)
5
 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... Subjects : Physics School : National Junior College
Ooi Junwei, Samuel
(0)
48 / 427-Aug-2013 (Tue)22-Jul-2013 (Mon)22-Oct-2013 (Tue