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Author Topic: request for addon in graphical analysis  (Read 9418 times)
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lookang
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on: July 05, 2007, 01:14:52 pm » posted from:Singapore,,Singapore

hi prof. huang,

it is possible to make the applet in the graphical mode where user can select a series of points and the applet display the equation of

1. linear regression fit
2. quadratic fit

3. area under graph.

the rationale of this request is after a needs analysis of students in the A level physics, the beginning students has difficulty understand and realizing from a experiential way.

learning difficulties addressed :

v =ds/dt

a = dv/dt

change in v = integral of a .dt from limits t initial to t final

change in s = integral of v .dt from limits t initial to t final

this way, computers can be used as a cognitive tool, to allow students to draw generalizations from computer generated equations.


attached is an example of how i intend to use these addon if available Smiley Grin



currently, the use of datalogger software from pasco ScienceWorkshop 2.3.3 allows users to do it

http://store.pasco.com/forms/download.cfm?DID=9&downloadtype=ScienceWorkshop

 
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Fu-Kwun Hwang
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Reply #1 on: July 10, 2007, 04:18:21 am »

Most of the function you want can be easily implemented with EJS. The only problem is how to enter the data.
Because EJS was designed for simulation. It is weak in data set input from user.
I will try to work on this issue. Please let me know if you have better suggestions.
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Fu-Kwun Hwang
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Reply #2 on: September 22, 2008, 02:47:10 pm » posted from:Taipei,T'ai-pei,Taiwan

You can find example about how to read and write data into EJS at

Simulations/_examples/TechnicalExamples/_WritingAndReading.xml
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