Algebra & Precalculus Demos with Resource Links: GeoGebra 3D with AR (Android)
Below is a list of quick screencasts that illustrate how GeoGebra 3D with Augmented Reality (AR) can provide both teachers and students an ACTIVE, HANDS-ON approach to exploring some algebra and precalculus concepts. 
Enjoy! 
Augmented Reality powered by Google Play Services for AR. 
EXPLORING THE 4 MAIN CONIC SECTIONS
The link to the GeoGebra resource shown above can be found here. 
PARABOLA: CAUSE & EFFECT
The link to the GeoGebra resource shown above can be found here. 
CAMPBELL'S SOUP CAN TEST: IS VOLUME MAXIMIZED?
The link to the GeoGebra resource shown above can be found here. 
VARIGNON'S THEOREM: 3D ANALOGUE
The link to the GeoGebra resource shown above can be found here.