Why the Moon Changes Shape
- Science
- Class 4–8
- 3D model
- AR card
- English
Eight positions show one Moon at different times. The bright half always faces the Sun; Earth sees different portions of it. This is a schematic overhead view.
The 3D viewer and AR open with a free Lably account.

Also called
moon phases · Space
What to look for
- The Moon reflects sunlight rather than making its own light.
- Ordinary Moon phases are not caused by Earth’s shadow.
- A full cycle from new moon to new moon takes about 29.5 days.
Try this
Find the new-moon and full-moon positions. Explain which illuminated half an observer on Earth can see.
Topics
About this model
A GLB file of about 609 KB, 20,456 triangles, shown in Lably's 3D viewer and, on a phone, placed in your room with AR. Credit: Lably-authored schematic teaching model. See /ar-library/credits.html.


