This section presents an example of using augmented reality to create an overlay with a 3D model that is used by the teacher to help students improve learning of orthographic views. Wu and Chiang (2013) shows that applying 3D animations provided more enthusiasm for the learning activity, better performance in understanding the appearances and features of objects and improve the spatial visualization capabilities.
For this purpose, the first thing the teacher needs is a 3D modeling tool.
We used SketchUp because it is simple to use, draws the orthographical views and is free. In this way, it was easy to create the 3D model that is represented in an isometric view (figure 8-a) and the corresponding front, left and top orthographic views (figure 8-b). If the teacher wants it is also possible to add textures to the model to make it look like a real object made of wood for example. This is very easy to do in SkecthUp, by importing a photo texture and add it to the model.
To help students visualize and understand this 3D model, we used Augment to render the 3D model in a mobile device triggered by a QR code. To upload a 3D model on Augment, from SketchUp we can export to a Collada file (DAE). This creates a .dae file and a directory containing the textures. Next, these files are compressed together into a zip file that is uploaded on Augment and then you are ready to share your model. This example can be tried after installing the Augment application in a mobile device and print the QR code available from http://agmt.it/28855. Figure 9 presents the visualization of the 3D model that the student can use to draw the isometric projection or the orthographic views.
This section presents an example of using augmented reality to create an overlay with a 3D model that is used by the teacher to help students improve learning of orthographic views. Wu and Chiang (2013) shows that applying 3D animations provided more enthusiasm for the learning activity, better performance in understanding the appearances and features of objects and improve the spatial visualization capabilities.For this purpose, the first thing the teacher needs is a 3D modeling tool.We used SketchUp because it is simple to use, draws the orthographical views and is free. In this way, it was easy to create the 3D model that is represented in an isometric view (figure 8-a) and the corresponding front, left and top orthographic views (figure 8-b). If the teacher wants it is also possible to add textures to the model to make it look like a real object made of wood for example. This is very easy to do in SkecthUp, by importing a photo texture and add it to the model.To help students visualize and understand this 3D model, we used Augment to render the 3D model in a mobile device triggered by a QR code. To upload a 3D model on Augment, from SketchUp we can export to a Collada file (DAE). This creates a .dae file and a directory containing the textures. Next, these files are compressed together into a zip file that is uploaded on Augment and then you are ready to share your model. This example can be tried after installing the Augment application in a mobile device and print the QR code available from http://agmt.it/28855. Figure 9 presents the visualization of the 3D model that the student can use to draw the isometric projection or the orthographic views.
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