the world in a different light
This applet allows for students to visualise the conditions under which a reflection can be seen in a mirror. When the mirror is too short, for instance, the point of reflection does not lie on the mirror so light cannot be reflected.
Link here: https://www.geogebra.org/m/rjpb2dv7
Direct link to GeoGebra: https://www.geogebra.org/m/e87sbuy8
I translate the wonderful applet done by Gilles Claudel at https://www.geogebra.org/m/AXY9QRs5 from French into English and customised it for the Singapore curriculum.
This is a common example used in the JC1 topics of Oscillations, where if one were to look at an object moving in circles from the side view, it will appear to move in simple harmonic motion. This simple 3D animation allows users to rotate the view to see exactly that. Right click and drag to rotate the view. If you are using a mobile device, use two fingers to drag.
To access the animation in full screen, visit https://www.geogebra.org/m/tsz95u6p
This displacement-time graph is used in conjunction with an SLS package to help students learn how to describe motion of an object and to use gradient of a tangent to calculate the magnitude of velocity.
For a direct link to the app, go to https://www.geogebra.org/m/k3ja7bnm
I added a little spider to help students visualise the movement with time.
I made some refinement to an applet created last year to demonstrate how vector addition can be done either using vector triangle or parallelogram methods.
To access directly in Geogebra, the link is https://www.geogebra.org/m/p2yvdsvs
This new applet is designed for students to practise conversion of common units used in physics on their own. There is a checking algorithm within, which might need some fine-tuning. For full screen view, click here.
The worked solutions given will demonstrate the breakdown of steps that could help students learn the procedure to convert these units.