Gallery
Discover apps people built on Collabby by chatting. Run them, then remix to make them yours.
Telling Sounds Apart
Listen to a sound to find the matching picture, and compare loudness and speed by watching the waves.
Different Gases
Weigh air itself, change temperature and pressure to watch a balloon's volume shift, and run tests to tell oxygen, carbon dioxide, nitrogen and helium apart.
Integrals and Volumes of Revolution
Rotate curves and stack cross-sections to compute volume by definite integration, and confirm the 3:2:1 ratio of cylinder, hemisphere, and cone.
Volume and Surface Area of Cuboids
Change length, width, and height to stack unit cubes for volume, then unfold the box to work out its surface area.
Volume of a Cylinder
Change the radius and height to stack the base area upward and work out a cylinder's volume.
3D Shapes: Nets, Surface Area & Volume
Fold and unfold nets to see how surface area sums the faces and volume comes from base area times height in prisms and cylinders.