As I have done the last couple years when we finished our 3D shape unit pairs of students created a poster listing attributes for 3 shapes of their choice (sphere, cube, cone, rectangular prism, pyramid, and cylinder).
This year I added an additional independent assessment a few days later. I asked students to create an audio presentation describing the attributes of the 3 shapes they did not include on their poster. Given the audio component most students used Tellagami, but a few also chose Chatterpis Kids, the video app native to the iPad, and Educreations.
Tellagami 3D Shapes