another artifact of learning during the EJS-OSP
workshop in Singapore.
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| http://weelookang.blogspot.sg/2014/11/vernier-caliper-js-model-by-jiun-wei.html source: https://dl.dropboxusercontent.com/u/44365627/lookangEJSworkspace/export/ejss_src_VernierCaliper.zip model: https://dl.dropboxusercontent.com/u/44365627/lookangEJSworkspace/export/ejss_model_VernierCaliperV3/VernierCaliperV3_Simulation.xhtml offline: https://dl.dropboxusercontent.com/u/44365627/lookangEJSworkspace/export/ejss_model_VernierCaliperV3.zip author: Jiun Wei Chia. Original author is Fu Kwun Hwang, Loo Kang Wee, Wolfgang Christian. |
The Vernier Caliper JavaScript Model shows the principle of operation and the physical parts of a Vernier Caliper.
The Vernier calipers model has
- an object (Blue) for the internal jaws to measure width of an object with slider to control width of the object and simple drag action to control position of object.
- an object (Green) for external jaws to measure internal diameter of a cylinder for example with slider to control dimensions of the cylinder.
- checkbox for answer to show the meaning of reading on the main scale and the vernier scale with zero error calculations if any.
- drop down menu of the various common vernier scales for sense making and additional testing out by learners their ideas of how vernier works.
- fine <> control buttons for learners to manipulate the model with single incremental precision
- slider control for fast changes in the vernier measurement
- reset button to bring simulaton back to original (default)setting.